I would have to say that my 10.5 Achilles RIB (double hull) stays very well behaved when towing from the bow eye. Motor locked up.
But it's much more than 40 lbs of pull to move it. Dink weighs 160 and motor 80 (2 cycle Yamaha 15).
As far as planning, no sweat with my fat arse
on the tiller and wife forward of the seat and a 6 gal tank mid ship. Needs maybe 1/2 + throttle to stay up. 26 mph with both of us aboard in flat water.
Planes very easily with 4 adults also.