Bolt patterns on boats are pretty standard, (some BassCat are six instead of 4) Steve & other manufacturers make Jackplates for thOse rigs also. Motor bolt pattern is standard. Stain on gelcoat ain't a big issue. Easily taken care of. Gelcoat cracks are caused by oveetightening, soft or rotten transom, crushing. If you crack gelcoat tightening thru transom bolts,you've got serious issues more than gelcoat cracks. Ive done a few. Steve has done a few.....thousand!!!
If you were told, saw videos of several failures , & advised by numerous well informed boat riggers ,of one particular single brand of jackplate that fails& the company isn't even in business anymore, are you are going to keep running a 200+ horsepower motor on it??? That's up to you I guess, but , no whining when that one breaks off & lands on you or passenger slicing tall to pieces. Or your expensive outboard is submerged while running. I'm not doing it. I don't run Maypop tires on my vehicles or trailers either. Its a WELL KNOWN HIGH FAILURE RATE jackplate.
'98 Tr20 Triton
'94 Merc 200Xri
92' ChampioN 201DCR Elite