A poor substitute for most
If you're a cruiser, it's a no-brainer- how much can you carry (laundry, groceries, spare parts, etc.) on a jetski compared to a dink? And how much of what you carry won't be ruined if it gets wet?? There's a reason jetskiers wear bathing suits or wetsuits!
Otherwise, it's just transport from anchor or mooring to shore. The jetski won't do it any better, will it?
The jetski is probably too heavy for a davit, too clumsy to tow, and I'm only guessing, but would be more expensive in fuel to tow...
Maybe we should ask all the people towing them what the advantages are.. yeah, I can't find any, either..
cup
If you're just looking for transport to sho