My v5 22 draws about 30-32 in with the outdrive fully down, 18in or so from hull to waterline (with a 5.7 mercruiser so it's a bit stern-heavy.)I bet, it looks massive in comparison.
Do do you know how the draft compares?
I assume 16-18’ is good for small medium and large-ish lakes but the 22is medium and up?
A camper top on a 22 would work well for overnighting maybe if a suitable camping spot couldn’t be found.
I’d find it a lot more usable than an islander during the day and roomy enough for 2 people to sleep in at night