My solution is still, in all tournaments where credits are involved, have all players that are in direct competition for the prize hit from the same tees. Whether it's an MPC, an open RG, an open free tourneys, etc... if there is a credit prize that players from all tiers are competing for, all the competitors should hit from the same tee box.
So it doesn't apply to tourneys like the free unlimiteds since the prizes are tier selective. And it wouldn't apply to non-tourney ranked rounds. Could even make a 'Use tier tee boxes' option when creating CC tourneys. But when players from all tiers compete in any game where they are all playing for the same prize, they should play from the same tees. Seems simple and would almost totally make sand-bagging obsolete.
My thought is this: The big problem with dual-accounts isn't so much that they shoot a 60 in a hack tourney. It really doesn't affect many of us. But why do people make second accounts? I don't think it's to win chump change 'ruling' the hack tier. It's because they reached a point where they weren't as competitive as they wanted to be. So they want to make another account, but they want to keep it at a level where they can compete. I submit that most second accounts are made expressly to sandbag with. If you equalize the tees in the real money competitions (again RGs, MPCs, Premium Open Tourneys, etc), it eliminates the sand-baggers.
And as I said, I don't care about green speeds. You are either a good putter, becoming a good putter, or not a good putter. Green speeds are math and experience. Once you know them, it's all about hitting your ding, whether you play curves or aim or a combination of both. Once you learn how green speeds affects power and how it affects the amount of break in a grade, if you hit your spot, you make the putt. If you don't, you miss. And that will happen on whatever speed green you are hitting. Rarely blow a putt past the hole, and I rarely leave one more than 1' short. But, I miss sometimes. You can put me on glass or a shag rug, and if I miss, it ain't going in.