Re: Boat Weight
I used to tow my 15' bowrider (70 hp O/B) with my Mercury Mountaineer (4.0L 2WD), and it worked fine. That Sun Ray will be similar in weight to that boat, if the "what I towed mine with" helps any.
One thing to consider even a little more than towing is recovering. I got a new(er) boat last year, and it's definitely heavier. The Mountaineer would tow it okay, but boat ramps around here can be rather steep and that 4.0 just wouldn't make the grade. A minivan with a 6cyl will probably pull the Sun Ray out of the water just fine - if you've got a car with a 4cyl it may tow it okay, but struggle getting it out of the drink.
Regarding the Reinell, you might find some info
here.