Avoiding getting the dinghy painter around the prop
Dinghy painters have a tendency to foul props. This happens if the painter falls over the bow whilst underway with an outboard. The painter gets carried underneath the dingy, down and into the outboard prop. They also have a tendency to get around the yacht’s propeller. This can happen if the vessel is towing the dinghy and has to go astern for any reason. The towing tension drops causing the dingy to ride into the stern and drop its painter. It is then pulled down and around the reversing propeller.
Additional buoyancy for the 'hard' or 'traditional' tender
Hard or traditional tenders make excellent and durable yacht tenders. However they do tend to be unstable and tip down when boarded badly by those unfamiliar with small boats. Boat owners with nice glossy topsides also tend to cast a wary eye to an approaching hard tender. Finally if waterlogged their inherent buoyancy can do little more than keep itself afloat and offer very little assistance to the boatman in the water.