I know it may be suggesting some oddball advice, but how about 90% rock rosin powder with 10%
magnesium carbonate (climbing powder).
MOS Grip powder is around 70% I think. 95% to 100% rock rosin is a bit too much and become ultra sticky. Combined with a smaller penis
sleeve diameter (around 70%), with natural moisture, it acts like traction glue. I've used this for many applications, from sport, to PE, in getting as much natural base traction as possible.
Private message me and i'll gladly send you my personal mix.