The best we have had have been a short rain jacket,
and waterproof pants. Bikers pants work best, as they are slightly
bent. The problem is that you have to duct tape them down to prevent them
from working their way up your legs and out of the half chaps.
Outdoor, and backpacker stores have them. REI
is a good source. For moderate amounts of money you can get them that
breathe a bit. For lots of money you can get them with Gore-Tex membrane
that breathes much more. Take your pick and pay the price.
Ed
Ed & Wendy Hauser 2994 Mittower
Road Victor, MT 59875