alpenpirat:
I use the way you describe it as an XP booster. What I suggest is to add extra points for every skin you win.
I don't think that's a good idea. If WGT did that, then people would be playing tons of 2-person 18-hole skins games to get the extra 18,000 XP available. And I'm sure they'd be buying XP boosts on top of that in order to compound that extra XP even more. People would be playing multiple skins games per day and leveling up like crazy.
Maybe something like an extra 10 XP per skin would work better. A small bonus to encourage winning, but not so much XP that it would encourage players wanting to level up to only play Skins games.
Just my thoughts.