Kinda late on this but do it! I am part of the Molly Roger Rollergirls and I love it. I am 260 lbs currently I even Jam from time to time. Yes thats right the bigger girls can jam to! I am one of the harddest hitting blockers on my team as well and no one on my team thinks it has anything to do with my weight either lol. So try it out. Roller derby is not the sport for everyone but its a lot of fun if you comit your self to it and being bigger doesnt mean you cant play trust me.
Oxidizing Angel #0440