M_Boats: Trailor tongue extension

Hi all, Now that someone has raised the subject of the trailor extension, I have questions about the steps involved in using it. At what point in the launch process do you extend it? Do you have to drop the trailor jack and disconnect from the tow vehicle to extend it? Does it making backing up more difficult? I might have used it this summer when lake levels dropped and I found myself backing the truck further and further into the salty water. Finally gave up going since I didn't want to ruin the truck with all the salt getting on it. Appreciate any help you guys can give me. Time for a cool change! Sandra(Seawitch #617)