Sure bro, we can get you going on the heelside. Can you provide a little more detail as to what you gather happens that causes you to fall on your butt? Also, what kind of gear (board, boots, bindings) are you using?
I have a GNU Carbon High Beam Series Snowboard, 24/7 V3 Bindings and a pair of Fresh snowboard boots. Whenever I try to slow myself down or go too fast heelside I fall. I guess it's just a balance issue. When im heelside is there any particular place where you are supposed to apply your weight to stay balanced better?