i have always used a belt when out wild fowling because it can be worn under your jacket thus saving the carts from getting wet and muddy another reason is i some times have 2 defferent types of carts one for duck and hevier ones for geese. i always have the hevier ones on my right hand side and the light ones on the left so in the half light i know exactly whats where. it also keeps your pockets free for other stuff, torches, calls etc