just as the title says , anyone have it done and are you happy? deff not cheap but thinking of getting it done

Tyson (aka Big Silver Cat) has it on his 50 and the MCON race boat (Post #2 below has a pic of transom).

In his own thread building up the 50 Skater, comments were made that cleans up really well when he was putting on some long miles in dirty weather with the 50' and holds up.

Buff and Wax Recommendations

Did my own on transom and keel to help with scum lines. The rest of the boat is wrapped. I no longer have to scrub the hell out of the scum line area like I did with wax. I used a simple DIY system Nasiol, probably not something I'd do on the rest of a gel-coated boat. Leave that to the pros.