Now I don't pull alot of spin moves because I simply don't have the leg speed or coordination to do them. But if you think about it logically you can figure out effective ways of doing them, by far the biggest requirement to pull off spin moves is leg and arm speed.
What is the purpose of a spin move? A spin move is for throwing shots that you couldn't normally throw from a normal battle stance. If you can throw the shot normally don't expect a spin move to make it happen any better. But against even a mildly experienced fighter a spin move is just a way of saying "hit me, I'm open".
Someone has already mentioned in great detail the shield over back during spin part of spins, without the shield on the back you better be fighting either a slowass or be extremley fast yourself. In my opinion spinning towards your target is just asking to get wrapped hard on the chest - like "Why did you even try doing that to me? You think I'm a newb" leave a mark kind of hard. Not to mention if they're wearing armor I really have problems seeing this work.
Spinning away, unless your fighting someone who dosn't know what they're doing, won't land any sort of fancy wrap-spin hits. Now the weak point of spin shots isn't that your back is open (your shield should be there) it's that your legs are (generally, save for weird punch shields) open. So what stops someone from legging you and backpeddling? Spinning away stops this.
But what is the point of a spin move, then? In my opinion, a spin move is more of a mental jiggle of your opponent. It makes them really want to kill you, because, honestly, a spin move just seems like a * move to pull. And someone that knows how to take advantage of someone else's spin will want to.
Therefore, I'm in the belief that a spin move could be used to lure out an opponent's arm. If your shield is on your back and you're spinning away, you're asking to get hit.
1) Do a sort of crappy shield tap to start the spin, be sure to not step towards your enemy during the spin
2) Shield on back as you're hitting their shield (or them, but I doubt it)
3) As you're spinning if they don't do anything nothing happens; but if they react and try and snipe your arm mid-spin or hit your leg - snap your sword around you (I hope you're not using a super short sword) and smack them in the arm. If they really really know what they're doing they won't throw the swing unless they know for a fact it will hit you - if this is the case please anticipate their swing and hit them first. <--- See how, in the end, it comes down to speed (with a little bit of spidey senses)?
Oh, and let me repeat, I am not someone that does alot of spins. This idea just popped in my head as something that made sense. It makes sense that it would work if you can roll a d6
. But it's really just a theory.
I'm a member of Aiden's unit (he has a few posts here and there) based in South Carolina, if anyone is wondering who I am.