An eight - inch board raised a few inches off the floor is a good beginning for the balance beam, known as the dog walk on the agility course. (canismajor.com)
I've raced through 25 or 30 at a crack — half - inch board soaked in gas for an hour. (si.com)
It also comes in a 5 inch wide board, but given the small size of our rooms, it was recommended to stay with the 3 1/2 inch boards so the wood wouldn't overwhelm the space. (theinspiredroom.net)