But if you walk slowly backward, you just touch the wall. It doesn't kick you if you push it too hard ;) I will have to try different things and see what works best.
Yeah, I've seen it and talked to him :) He wanted to try 4,6x4,6 (this is the space he has) but SteamVR limits space to 4x4m with lighthouse 1.0. Even if it tracks outside that space.
I am uploading a build and probably tomorrow in the morning I will publish it. There is a crouching section. Check options/play area, there is crouching and select "allowed". With auto it works only if tile size is big enough.