Maybe Captain Yamaha bunks there?
338 is just about to get customed for a 4-stroke electric tilt Yamaha.

Does your OB have a straight-up elevator device. When it's up can you seal the hole? Do you have any thoughts about the added weight back there?

I'm certainly going to have to raise and or remake the hatch for the tilting of the OB - but it never occured to me that there could be a straight-up option. The 4-stroke weighs in at 110#!