I'd say no, he can't water-walk or tree climb. I've always assumed no, at least. Granted, I'm not entirely up-to-date on the anime...I haven't seen most of the 'filler' arcs, so perhaps someone could pull in evidence otherwise. But, well, the water and tree thing is all about precision chakra focus to the feet. In that, it IS a jutsu, kinda. To do it, you need ability to control and emit chakra.
Granted, Rock Lee CAN control chakra. If I remember correctly, the Lotus and gate opening thing...is essentially pumping chakra flows to do bypass the normal limits of one's own body. So he can control it. But I don't think he can emit it.
The Lotus is an internal thing. I take it that...it's the emission of chakra beyond his body that Rock can't do. Given the walking tricks require specific amounts and patterns of chakra to be pumped out from the soles of your feet...
-- Acyl
Granted, Rock Lee CAN control chakra. If I remember correctly, the Lotus and gate opening thing...is essentially pumping chakra flows to do bypass the normal limits of one's own body. So he can control it. But I don't think he can emit it.
The Lotus is an internal thing. I take it that...it's the emission of chakra beyond his body that Rock can't do. Given the walking tricks require specific amounts and patterns of chakra to be pumped out from the soles of your feet...
-- Acyl