Tricks that accelerate/decelerate spin speed

In my practice time I would like to work on combining moves that maintain or speed the spin rate as well as slow down the spin rate. I know that proximity of body to pole is key here, as well as initial momentum. Anyone willing to name a few shapes off the top of their head that they go to for speeding/slowing their spin? Sometimes I find myself losing momentum midcombo which is a vibe killer! Thanks💗