realskiers

First even my anogenital distance hurts the first couple rides of the year, there is no way around that IMO as it gets conditions

You should adjust the seat so your legs are slightly bent when they are at the downstroke. On most Mountain bike you feet will not be able to hit the ground while seated. mine certainly can not. IF I am putting a foot down I either get off to front or dismount like I was in a cyclo cross race. I know that sounds scary but just leatn to get off the saddle and you will be fine.

After that is right make sure the weight is on your hands and feet. Very little of my weight is on my butt while riding any of my bikes. the saddle stabilizes you body but you do not rest on it. This is something most people do not know but clipless pedals will take away alot of pressure from your butt because they let you pedal more effectively.

next bike shorts! After trying everything I only wear bib shorts. High end bib shorts because well it matters.

Lastly Chamois creme or cheap substitutes like vasoline and diaper rash creme. My 2 favorites are DZ Nutz and Doctor Boudeux Butt paste. I use them for any ride over 2 hours or if it raining. rain can drive alot of grit down there and causing some painful chafing but with chamois creme its a non issue.