Tow Vehicle
Since you have not aquired the Highlander yet, don't. Do some extensive research on towing and be sure you cover everything. A 26X with trailer, a 50Hp motor, two tanks of gas, supplies, extra mods done, etc. etc. will weigh in in excess of 3500 lbs easily. You need a Class 3 hitch and tow vehicle, (up to 5000#) to be realistic and safe. Your tow vehicle should be heavier than the load you tow or else when push comes to shove the heavier load will win out. Also consider the wheel base, the longer wheel base vehicles really help in preventing the tail from wagging the dog. I originally had a little two door Chevy Blazer (Class 3)with 5000# towing capacity, 3.73 axle ratio 195HP & 190 lbs/ft torque. It had all the muscle for the job but lacked in vehicle weight and wheel base. I now use a Chevy TrailBlazer with the extended 129" wheelbase, it also has the factory tow package, 3.73 axle ratio, frame integrated hitch, built in wiring harness, 7 quart oil pan, transmission cooler, etc. etc. and it weighs in at just over 5000# a good 1000# more than the load I tow. A much more comfortable tow package and a vehicle my wife enjoys driving. If you want to own a boat you should also consider owning a good tow vehicle. Also consider legal responsibilities in your jurisdiction, you may be legally required to be within safe towing limits or face fines or insurance problems if you get in an accident and have failed to ensure your loads are matched to the vehicle. You could be held liable! Load the boat up and take it to a commercial scale and you may be suprised at how heavy a load you are pulling! The tow vehicle is not the the the piece of equipment you look to save money on, it is the piece you look for safety on. Think about it.