Hey my springy has a big old white bum from sitting on my board on the beach after i've come out and i'm watching Brent surf or before i go in and am trying to work up the energy. It hadnt occured to me to get rid of it, honestly noone will notice, and even if they do they'll give it about 0.003 seconds thought, realise its wax and move right on.
If the wax is coming off while you're in the water sounds like you might have the wrong wax for you're water temperature, check that if you are in warm water you're using warm water wax cos anything else will just slop off.
If you're really keen to get rid of it, i think PapaW has said before that you can put your wetsuit on a cool wash in the washing machine, although i've never tried this. If that doesnt appeal or work try leaving it out in the sun and just picking it off and then giving it a scrub with some mild detergent.
As for looking at surfer's bums, its all part of the fun
