I have a dinghy attached to the swim platform of a 2008 290 by a Weaver arch davit system, a weaver lever on the dinghy and a 60 lb motor. Total weight is less than 200 lbs. To make it easier to lift the dinghy out of the water to vertical, I want to add a U bolt to the underside of the arch then run a detachable 4:1 pulley system. The reason for utilizing the arch is that it gives a better angle to raise the dinghy and decrease resistance. Will the arch support the pull? Any suggestions as to reinforcing the U bolt.?
Other suggestions welcomed.