slippery ball? get a grip!
i read a couple of messages here that ppl says it is difficult to grip the powerball. i find it that way too after i received mine. my fingers were in a lot of pain due to too tight a grip as well as gripping onto the hard plastic.
to remedy that, took a racket grip tape and wrapped it around my powerball. it provides a grippy surface that is also soft as well as sweat absorbing. nowadays i can concentrate on speed and strength training instead of painful fingers.
you can take a look at a picture here: