You should also consider easy storage of your builds. The Mega Bloks boats come apart, but converting them will force you to glue certain elements together. This picture shows the Man o' war, which didn't really have a deck. So I created a deck at the height I wanted, leaving two holes for the masts to fit through, so they could be stuck in the original mast bases underneath. I can just pull them out if I want to store or transport the ship. The small picture in the corner shows four of my converted boats stored in the cupboard.