I use thick stiff Cabelas 600 gram boots laced tight and double knotted to limit laces getting grabbed. Not MX but way stiffer than most regualr boots. Usually wear heavy Carhart pants or coveralls. For hunting, I wear an open face ski/snowboard helmet, as I am genneraly going less than 15MPH and not interacting with other vehicles, just potentially branches or the ground. Not saying it is the safest set up, but balanced for safety and functionality for me, in that application.