$6.00 weight belt
Your choice of the follwing
utility hooks $5.00 With chain $5.00 (preferred)
set of ratcheting tiedown straps with hooks on each end $10.00
Auto tow rope with hooks on each end $12.00
Construction is simple.
Take the bed off of the wheel barrow and drill a hole in one end for a hook.
Attach the other end to the weight belt load the sled and pull!
The long sweep on the tub makes for smooth sled dragging with little resistance to the grass.