it depends where you live...i have friends down in Florida that say jumps there are a pain in the *** because its more sand than dirt. Also if you use logs make sure you covered them up with ATLEAST 1-2" of dirt otherwise once there worn in it'll be hard to re pack them if someone messes them up without taking logs out and rebuilding...and if you dont cover them up enough when you pack them down the jump will be bumpy.