6,319. Mar 21, 2009. #4. Re: Oars for 12' Alumacraft. Good point, Bob. His 12' Alumicraft would call for 8' oars or even 8' 6", according to that chart. However, unless he's going to be rowing a lot, those are going to be a bit unwieldy to stow in that tinny. For use as emergency propulsion, I find the 6' oars work just fine on my 12' aluminum ...