The problem with towing with a car is most are now front wheel drive and you could have issues on steeper ramps. Smaller vehicles also have smaller engines with less torque to get you going from a stop. Brakes can be another issue.
That all said I have had friends tow with VW diesels and had no issues at all.
One friend routinely towed with a diesel Jetta and I was amazed at how well it did.
Your boat really doesn't weigh all that much but it would be too much for most small vehicles as most of the smaller vehicles have a 1000# tow rating if they have one at all.
If you really wanted to be safe I would go for a compact pickup (Ford Ranger, Mazda, Toyota, etc)a compact suv (Ford Escape, or similar) or minivan. I would also get a V6 as a little 4 banger would have to work too hard.
When I was between trucks I did move my 18' aluminum w/90 OB around with my Honda Civic but I would never take it on the roads or try to launch with it. I just moved it from one parking area to another on my lot.