Originally Posted by RAGTIMEDON
One variable no one mentioned is where you are cruising. When we crossed Lake Michigan years ago, we used to figure 5 knots as minimum speed, because the run was about 60 NM where we usually crossed, and we always liked to do it in the 7 AM to 7 PM time frame. If the wind fell off and our speed dropped below 5 knots, we would start the engine. However, when crossing an ocean, you really don't want to start the engine because you don't carry enough fuel to run the engine for a couple weeks!
I agree. paddling a 30' with a boat hook never gets you very far. Of course judging by some of the boats at the Marina, I would say 0. I never see them leave the dock.