Having had to do this, twice
, but with a 4m Flatacraft, I can confirm that Capt j's method is the right approach.
A line or two tied off on one side and thrown over the hull.
Climb up the hull on the other side whilst leaning back and over she'll come - right on top of you.
DON'T then try the engine, it's no doubt ingested some water and you don't want to learn about hydraulic lock and the effect it has on conrods.