I was thinking of buying This :http://www.amazon.com/Dimension-Chai...7138480&sr=8-2 but I think I might get lucky with a half-link so I'm waiting.

This is essentially what I was doing with my singulator. The singulator and all those simpler type tensioners will either allow too much chain slippage when power is really applied or downright snap at the spring.

I actually reversed mine to push the chain up and then have it held by bands, but they have to be replaced every few weeks as they stretch out. Very ghetto for the whole singulator + cog costs about 70 dollars.

Yes, I have rear derailleurs (Tiagra/105/Ultegra), but I've shamed the bike gods enough with converting a Caad9 so I'll let that go....

Anyways... I found that tensioner, (which seems extremely sturdy) via here: http://spicercycles.com/online-catal...oners-t806.htm Which has some interesting options I never knew about... just so happens Amazon sells it cheaper.

I also was thinking of the eccentric hub, but I like having the option of swapping out wheels on a whim.