Thats an interesting technique with regards the weights.... Hence being able to put your hand through concrete! Awesome.
My background is point sparring with the ITF taekwondo... Life in general has caught up to me so I dont have the time to really focus on competetion as much as I used to do but key elements of my arsenal were...
Backfist - but real fast.
Blitz - start with a feint then move straight in with a flurry of punches.
Double up the side kicks... as they come in just pick your leg up and jab a side kick...
For me it worked.
Now if you want a masterclass -
Warren Vice of my organisation the TAGB.... hes won several world Taekwondo titles
http://www.youtube.com/watch?v=A_hV_xkl21g
Thens there another guy from WACKO... we have him in the Martialedge TV section. His style was very different to Warrens but very effective.
Any more ideas guys? Keep them coming.