Hi, Dana.
Lately it seems all the forums have been referendums on various yakusoku kumite. Fine... But I'm not going to go there now, because I don't believe I need to in order to address your concern. I believe I understand your issue, and I have a record of working with women to resolve it. Some have already addressed the topic to some extent. I'll add my 2 cents.
You wrote...
So I've got an issue of late with the idea that {...} I'm supposed to block a grown man's front kick with my arm.
Well yes and no.
Honestly - it ain't gonna work for me unless a raging 5' 3" woman of under 125 pounds attacks. Most of the karateka I train with are 175lbs or more and closer to six feet than five. It's a question of physics.
Dana, I just got finished working with Master Gushi. He's barely a whisp of a man, but he was working with my kicks no problem. Interesting...

And no, he didn't violate the laws of physics.
Uechi, as a system, (to me) clearly shows that one of the most favorite ways of dealing with a kick is to raise your own leg to block it.
This is a great defense, Dana. Decades back, I had to fight a Hapkido black belt in my dojo with tree-trunk legs. One day this dude actually blew the bottom out of the heavy bag with his side thrust kick. He made several folks in the dojo pee blood with his yoko geri kidney shots.
When I sparred Lloyd, my favorite thing to do was to charge in with crane knee high. Once I made contact with the lower leg, I was "all over him like a cheap suit." That worked great...for a long time. Then he started learning Uechi. Then I had to change my strategy; I needed more choices.
Now the hands must be alive in case the kick is higher than the mid-section and all that
Indeed. Lloyd took quite a few heads off, so to write. Lloyd (and others) could kick you in the back of your neck with a hook kick when the two of you were in elbow strike range. Gotta have those hands ready, and the body properly checked...
but really. To me Uechi never suggests touching a leg with an arm unless you're dropped down in a horse stance and that's risky business or if the kick is coming above the waist.
Oh really? What about "hawk chases sparrow" in seichin, Dana? There you have a move done in a shallow stance that can be a crane leg block/jam, a sukuiage uke (scooping lifting catch - I hate the word block) and harai sukui uke (downward scooping catch). Yes you can do many, many other things with the movement... But here are three techniques that make perfect tools to manage kicks.
So why so much emphasis on stopping round and front kicks with arms?
Dana, the problem is that you've been learning Uechi from too many big guys. The way you do the style isn't the way a strong man should do the style. I constantly have to poke fun at my female students for standing in there and taking these killer shots with their arms. I tell them something like "I know you have all that upper body strength to rely on but..." It gets a smile out of them, and makes them listen.
I use the space shuttle as an analogy. It's a complex system, and many, many things can go wrong. You'd never get that thing to space and back without triple redundancy in almost all systems.
The same goes for "arm blocks" (I still HATE that "b" word...) in Uechi Ryu. I often start students off by showing them they can avoid being hit by many techniques just by moving off the line of force (or rotating off of it) at precisely the right moment. Note I did NOT say move back in the direction of the line of force!!!! This is what the torreadore does to the bull. It's a thing of beauty when it is done well. For a gedan barai, this means a zig or a zag. For a roundhouse or hook kick, you will find that the lethal zone is in a small arc where the technique is focused. Move with the path of the lateral kick, and you both move out of the power arc and produce a Doppler effect that nullifies the power of the kick. Or you can move in and jam the thing.
Once you have confidence with the movement, then the forearms can do much more interesting things. They serve as feelers as you work your way in to where you want to be. When/if you are good, they can serve to catch the kick and dump the attacker or attack the attacker in the foundation at the point of contact. Difficult to talk about...easy to show.
Rick I believe also talked about using arms as a kind of shock absorber. For cross blocks, think of the arms as a suspension system on a car. The spring has give, but the shock absorber doesn't allow your suspension to collapse. Actually another analogy is like the crumple zone on a car's front. You absorb the energy with some give in the arms and perhaps the body.
When it comes to straight kicking techniques, the redirection principles learned in kotekitae apply. You do not strongarm a powerful straight kick; you redirect it with good technique.
I also think folks learn a really bad habit of kicking and leaving their leg out there so their partner can "block" it. Now everyone is learning bad habits - the kicker leaves their leg out and the "blocker" thinks they've got the timing down. (Not talking about white belts doing this - I'm talking about watching black belts doing Dan Kumite doing this)
I see all kinds of bad habits in partner work, Dana. Over time I've gotten to be able to "read" peoples' techniques. Sometimes I'll not even block, and the result can be pretty comical. The partner immediately gets the point. Then when it's time for me to attack, I go straight for the target and ignore the block (with control). It's amazing how often I get dead on the target.
These are the kinds of things that good teachers do for their students, and good students do for each other. We must respect each other and care for each others' welfare. We must practice safely. BUT...we must be honest with each other after we bow.
Cry in the dojo, laugh on the battlefield
- Samurai quote
So here's what I see is the bottom line:
1) Uechi Ryu gives you many choices. You will need those many choices; not all techniques will work against any one individual, or in any one situation.
2) It behooves you to master each and every one of those options so you can be true to the style and true to your needs.
3) In the parlance of Dragon Society International, you need to learn the "players to the game" to make these things work. As the instructions say, "some assembly required." But you know what, Dana? For every student I have built like you that is able to figure it out and make it work, I have made myself an instructor that'll be a better teacher than any champion athlete you can march in front of me. Great athletes can rely on good genes. Pocket rockets learn the karate, and have all the wonderful "magic."
And God help us when you get a great athlete with great technique...
- Bill