Fist-less wanks
One of my alternative favourites is to get a latex glove - add baby oil wrap it in a small towel with the hand hole still visible and sticking out from the loosely rolled towel! Then do as the other guys said - put it under your mattress and fuck the hell out of it !
Have you tried the no hands - difficult but the orgasm is fucking amazing...
The best way Ive found is to stand naked in front of a mirror then start moving your body from side to side making your cock slap against your hips - keep this going then alternate with thrusting movements so that your cock hits your belly button then swings under your balls... when you are really hard just thrust up and down hitting your balls and belly button - keep it going - Ive very little foreskin but I get the amazing feeling of the complete length of my cock sliding inside my skin - this is absolutely exhausting but if you keep it going youre orgasm is atomic!!!!
If you have to give up - revert to ordinary wanking - the orgasm is almost as good!
Let me know if you try it!!!!!
PS Im off to try it again now!!!!!