1) How do you tie off your anchor point for SRT? I have just wrapped it around a tree trunk few times and knotted it with a double-figure-eight, but this doesn't seem like the best method.

2) Would you ever open your locking carabiner while your load was on it at height? For example, to clip in to a new DRT TIP or to switch from ascenders to a grigri to descend. They are rated for open and closed weight, so I feel like it is ok. Given the shape of the biner and the fact that there is a load on it, it seems impossible for the rope to come out.

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