i used to have that problem because i wasn't very good at grabbing, but i found that if you just grab one of your shins kinda like a cannon ball your style gets a lot better. Also, after a while you get use to being tucked and can do any grab you want.
"you can't have half the pie without eating the cherry cake........and that has absolutely nothing to do with coneheads." - my crazy teacher
^ err... a cannonball would look pretty much the same as a double safety, which is what i recomend to lose the pencil steeze. Just tuck up ur knees a lot and try to get both of your boots, it's make you look better.
meh... it would look about the same as a double safety... Ya know what grab i've been thinking of trying out ... like a double grab with a nose safety and tail safety. Just tuck up and make sure the shoulder to the side ur spinning is the one doing the tail safety so ur shoulders are still open for the rotation... that'd be sick.