I pulled the boat out for the season today. My local ramp is under re-construction, so I went up to the next harbor/ramp to haul-out. It is a fairly steep ramp, but 4WD Lo was no problem.
I'm going to be on the lookout for a 2017-> F-250 Gasser w/ 4.30 differential, as they are rated for 15,000 lbs.
As it stands now, I don't dare go over 30 mph with the F-150, because of braking (or lack thereof). When the trailer comes out of the water, the trailer discs are quite wet and they take a bit of running to dry off. . . . practically all the way home. EoH should help regardless of the truck.
My current rig (when loaded) lowers the rear of the truck 3" with about 1,200-1,300 lbs of tongue weight. Not terrible, but I have a set of booster shocks on order. I need to get the ball/hitch about 4" higher when loaded, as the tongue area bottomed out on the way up the ramp, because the ramp has a sharp transition to the flat surface.
So, I think I will do the EoH for the benefit of the trailer braking and do a wait'n see on a truck upgrade.