I've seen 2X2X3/16 steel tube sliding in brackets under the traveling tongue. It has coupler and a pin that passes thru a hole at the stored position and at the working position. So,
1) stop the boat and set up.
2) chock the wheels, pop the hitch and reposition in the extension coupler.
3) pull the pin and drive the Jeep forward to the working length and replace the pin.
Now you have a wick'd long tongue that works pissah!
Cost is about $200 unless you have a buddy with a metal shop and scraps. Then it's Papa John's and a six of long necks.
1) stop the boat and set up.
2) chock the wheels, pop the hitch and reposition in the extension coupler.
3) pull the pin and drive the Jeep forward to the working length and replace the pin.
Now you have a wick'd long tongue that works pissah!
Cost is about $200 unless you have a buddy with a metal shop and scraps. Then it's Papa John's and a six of long necks.