..."what dink" is a harder/more subjective question than "what boat" LOL...
My opinion for OP/thread author would be a ROLL-UP INFLATABLE. preferably hypalon material with roll up slat floor non inflatable keel/floor versus inflatable
keel.
Small enough to tow behind. tie it off the stern rail so nose up/less drag/less likely to swamp. Make a lifting harness so as you can use a
halyard to raise it onto deck/raise outta
water at night for security/helps keep it cleaner from
marine growth.
ideally 8ft Avon Rover R2-50 model, has
wood transom/roll up slat floor. Put a
Honda 2hp/2.3 on it and you're golden, I bought/pieced together this very setup for $600 used off craigslist in the
Florida keys. I built it for a girlfriend who wanted to move aboard my boat as its trouble free.
keep in mind not a boat for careless/caviler types as this setup needs to be operated with caution. Little wet when fetch/chop is going on but that's the
price you pay for having a little dink in a big fetch/chop. No bailing just
lift it up on a dock/shore with
motor on it (fuel valve shut off) and twist it to pour the water outta it,
small boat the smallest person can man handle it with somewhat ease.
Good 2nd choice 8ft Avon Redcrest is almost same boat, but has
wood panels for floor and no solid transom, it's essentially a rafting design raft meaning it's chambers encircle the boat solid, it has a add on
motor bracket you attach if you wanna use a motor/again
Honda 2hp/2.3...or without bracket it looks like a mini river rafting raft.
Both these boats row reasonable well, busted the shear pin on the Honda prop and had to row cuz I forgot to replace the
emergency extra shear pins LOL. There is also a aftermarket kit with Co2 carriages you employ into the air chamber filler valves that convert it to a instant inflatable life raft...never had the kit myself just seemed like a neato idea IMO.
These are Small/light/quality, roll up into a carry case/stores nicely in lazerette/quarter birth. DO NOT GET A PVC BOAT!!! They tend to form creases (PVC material) when folded which become the place where they leak/rip apart...
I am a stanch Honda guy as far as the little/micro dink motors go b/c they're air cooled (no impeller so no sucking mud into the motor when you ground it (which you will) you'll break the shear pins before you break the plastic prop..the
oil drain
plug is worst thing about these motors, above the tiller handle by the sight glass and you gotta tape off the tiller handle or
oil pours onto the tiller handle when changing oil-holds about 1/2 a quart. Pretty quite until you open them up then you'll wake people up LOL. great little motor hardest problem is keeping ethanol free
fuel in the gas can...easy to pull, starts first pull every time...best girlfriend/wifie motor ever!!!
Side topic...If you want 8hp or more for bigger
RIB boats then only settle for yamaha IMO, ideally yamaha 8hp two stroke small light bullet proof, or a Yamaha 4stroke 9.9 cats meow....watch craigslist and you'll see deals on dinks/motors...
Only down fall in this setup (Avon Rover R2-50/Honda 2hp) I built from my
experience is you're not going anywhere in it after 15knots or a small craft advisory which makes them totally a fair
weather dink.
You're gonna need some skills, understanding about seamanship to operate it 10plus knots
wind, mild fetch/chop. Makes a great 2nd boat for cruisers/couples but worst primary boat for people "cruising" with variable conditions/needing to go long distances (they don't plane to do so you'll destroy it sooner than later)
Again, this is my suggestion based on what you shared...