I have an 07 Sport Trac V6, average 18/19 without the tracker PT175 w/ a 60. With the boat, I get 14-15 but I only have to tow it 12 miles one way to the ramp so I'm not overly worried about it. Rangers are pretty heavy boats if memory serves, so going down in size of tow vehicle won't end up with anything in your favor imo. My Sport Trac is not my daily driver, have a Mazda 3 5sp that gets 32+mpg, so I would suggest you getting a small used econo box for the daily driver if that's in the budget/possible. Prices of used cars have gone up since the gas went back up, got my Mazda 3 after the last round of $4.50-5.00/gal gas. The sunami in Japan has helped/caused the prices of used vehicles to go up as well since there are not as many new Japanese cars coming in.
GO BIG ORANGE !
I meant to behave, but there were just way too many other options available at the time.