I run a Bateau FS18 and have been using an old 18’ Stiffy Fiberglass Push Pole. As you can imagine that gives me quite a workout. At nearly 60 yrs old I want to upgrade to a lighter carbon fiber Push Pole. I’ve always understood the recommendation is boat length + 3’. And I’ve talked with a a couple of different guides and they recommend going with as long as you can get, so 24’.