I just play two players/hands myself, and make the plays with each that I would have made without knowledge of the opposing hands. Probably not what you're looking for, but it's not bad.
Doing that works just fine with three hands also!
I'm in the multi-hand camp as well (I don't own enough decks to beat Chris's total).
I tried the one solitaire variant and even started working on my own but the game is structured in such a way that moving from one hand to another detaches you enough from previous "players" that it works well for solitaire with the normal rules.