Keep in mind your boat weighs significantly more when you go to yank it out of the water, although that is a temporary situation, but....
If you really want to tow something, get a used pick up just for that job. Nothing pulls like a real V8 and suspension made for towing.
We have a brand new 2.0 Edge and while I think it would 'tow' something, it's not even near the same league as our 16 year old Excursion with the 7.3 diesel. And believe it or not the 2.0 has more hp! But not near the torque.
Could the Edge tow it? Probably. Will it hold up doing that a lot? Probably not.