Shorts.........that's the solution.
comfortable, flexible, cool.
I have a pair of camo cargo shorts and a pair of MX pants that the legs zip off to become shorts.
Trials boots cover the shins so there is just a bit of skin exposed between top of boots and the shorts.
It also helps that I wear a knee brace for arthritis on the exhaust side.
It works for me, not for everybody. But I am not quite right in the head.