Pierre, keep them away from the sun!!! Rinse good with fresh water. Hey that's where the trouble is. In Malta the sea water runs in the taps.....
I use baby powder - I know a million times I was told that the perfume is bad. Had the suit for 2 years and 4 months and (TOUCH WOOD)
they're fine even though I still use the same powder.
If by any chance you are diving in cold weather (not in Malta) take care stretching the latex. It wouldn't stretch as much and it will break.
Your main enemies are the salt water and the UV rays.
Oh by the way a quick fix would be using duck tape.
Lawrence Debono