I use a broom stick as a leval wind to get the wire to coil up as a single layer. Once its set with the boat in the sling, the weight of the boat adds some memory to the wire and it seems to work ok, only needing adjustment every now and then. I've had to tighten the lug nuts on the wire too, they can slip. Remeber to stand in the middle of your boat so that it's leval when the sling catchs and starts lifting your boat.