You say you've experimented with different clothes. I can give one
big don't and quite a good do:
DON'T wear jeans. They can chafe horribly and can lead quickly to the
sweaty scrotum that causes the painful sticky skin scenario.
DO wear padded lycra cycling shorts. They're comfortable, look sexy
(they do when I wear them anyway) and are tight enough to hold everything
up out of the way. You will probably still find, though, that you need
to find somewhere private to put your hand down your shorts and readjust
from time to time.
Whatever you wear (except for jeans) you will last longer without
underwear. As far as I can tell, this is simply because one layer of
clothing rubs less than two. Not that I don't usually wear underwear.
If I'm practising for a prolonged period or riding much more than 5 miles
I wear cycling shorts. Otherwise I just wear what I would normally wear
anyway (not jeans).
------------------------------------------------------------------------
| Danny Colyer | bs1dwc@bath.ac.uk | To drop is human, |
| University of Bath | ----------------- | To juggle is divine. |
---------------------http://www.bath.ac.uk/~bs1dwc/---------------------