*Fast is it, per chance?!!
*You run that set-up for long,
24 months personally but its been rigged like that since 1999.
*Any hull/transom issues with that size OB?
*Presumably your transom has the standard bracing as offered by the factory a-frame?
No its got a custom frame which bolts through the hull about a foot forward of the transom and the normal two bolts on the transom
*Where the water line when stationary
About 8inches from the lowest part of the transom
*Much water over the back?
Not really. If you stop suddenly a bit will come over but that what the well in the floor is for and two 1100 gph pumps are for!