I did a Tenkara trip today on Battle Creek with Mel from Berkley.  The creek is in great shape.  Plenty of cold clear water.  The fish weren't jumping on the hook, but we had plenty of opportunities nonetheless.  The native rainbows liked a parachute adams and a size 10 parachute grasshopper the best.

Tenkara gear has come a long way in the last 3 years.  Many of the new rods have two or three locking lengths from 9ft to 12ft.  This variable length adds a lot of versatility, especially since the length of line that you fish is fixed.  The first Tenkara rods were 12-14ft and I really like the shorter lengths with the option to go longer.  6-10" rainbows are a lot of fun on these rods.