Replying to Help me stop making excuses for myself

I've skied nearly all my life, but for some reason have only started trying to throw tricks for the past year or two. I mainly ride 184 Billy Goat's with Attack 13's, which are great for pointing em straight down the often crappy snow we get here in WA, but they are on the heavier side. I feel like I have problems with throwing spins, shifty's, or flips with them because in my mind they are too heavy to do so (or at least heavy for someone learning these things). Can someone tell me that I'm wrong? Or if they are heavy, any tips?