So many variables. If your 24’ boat is a sailboat with a keel, forget about it. You will drown the truck. If it is a shallow draft power boat on a roller trailer, you don’t need to go deep to launch but you may have to for retrieving. A bunk trailer requires depth for both procedures. You definitely don’t want too long an extension on the vehicle because it will stick out straight when the boat is on the ramp,causing the trailer to be at an extreme angle. Could cause lots of damage. You could get an extension for the trailer ( 6’) and submerge the trailer while the truck stays high and dry. I had a B Touring Cruiser and launched a Whaler Montauk,but I never enjoyed it. I now have a F250 ,4wd with a slide in camper. I launch my 18’ Seaway Sportsman using my front mounted hitch. So far ,by far,the best solution to launch and retrieval.
