Originally Posted by Art
From experience, with different but similar rig, I know it is a real PIA (ugly/unsightly too - lol) if inflatable support bladder looses most of its air over span of time while away from boat.
The Seawise system is a good rig albeit it more expensive than one might think. It's also available with electric drive.
We came up with a fast and easy way of deploying and retrieving our swimstep-mounted 9' Livingston by using the GB's boom and a 100' boom fall threaded through a pair of dual-sheave blocks. The Livingston sits on a pair of Weaver Snap-Davits.
The boom fall is long enough to let the dinghy all the way down to the water without having to reposition the boom itself, and the dual-sheave block setup makes it an (almost) one-hand operation to pull the dinghy back up into its upright (on its side) position on the swimstep.
The dinghy's motor is on a manual swivel mount, so the end result is sort of a poor-man's Seawise Davit. In fact it has an advantage over the Seawise system (and the Weaver system) in that moving the dinghy from it's in the water postion to its stowed position takes about five seconds. Letting it down takes even less.
But if we had a heavier dinghy setup, a Seawise or Weaver would be the way to go, I think.