Weights and Measures
I would figure out what the weight of the boat & trailer is, and then check my owner's manual for max. trailer weight that can be towed. Remember that the advice in that manual was written by liability-fearing lawyers and is more conservative than what the engineers would specify.
From my own experience towing, braking will be the limiting factor rather than engine size.
And the drive train weak point is often the transmission and/or clutch.
Bonus points if your truck has a 5 or 6 speed manual with compound low.
OTOH, for decades the venerable "torque flight" in MoPars has been one of their strong points.
In Days of Yore, I repeatedly towed a Ranger 20 (all up weight of about 2K #) with an '80 Mazda 2 litre pickup. Learned not to follow anyone too close on the highways. (!)
Engine didn't care and the five speed was fine.... the clutch was unhappy about pulling up the launch ramp. I eventually changed the rear axle to a higher numerical ratio. A good and faithful little truck.
Later I used a Dodge PU with the little 318 ci and automatic. Great combo.
A friend of mine used to tow his R-20 with a 140-series Volvo wagon.
Vehicles will sometimes surprise you with their capabilities. My most recent prior pu was a Mazda B4000 with the optional tow package and was rated for almost 6K towing weight.
Present one is a Toyota Tacoma rated for about 1500# towing. Truly it's a "Toy" truck in comparison.
Regards,
Loren