I'm certainly no expert, but...
I've been using a classic 13 ft Boston Whaler as primary tender
on my boss' Bertram 58' for the past five years. Console steering
- 40 hp Yamaha. It has proven to be a real workhorse and it tows well.
However - I would be reluctant to have one as a primary tender
on a sailing yacht as all of them are quite heavy and difficult (if not impossible) to stow on deck
. And if water
infiltrates the foam core
- you cannot even pull it up on the beach!
I find the ride a bit uncomfortable in any degree of choppy water
Yet - a Whaler is hard to beat as a harbour tender when living on a mooring
in your home port. They're un-sinkable and will last forever with reasonable care.
As with all boats... there is no "Perfect" tender, either.