I don't know of any places in the US but just wondered about gaining hours on the 206 in particular. I have a few hundred hours on 172's and a bit on the 206 and they are fairly similar. The biggest difference is the engine size and the constant speed prop, have you considered gaining hours on a 182 maybe, it has similar complexity but lower operating cost. This might be of no use of course as I don't know your reasons for needing 206 time.