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I don't know what the decent rate is on v2. This is 80% the area of v1 (the diameter is measured differently starting with v2). I decided the moment on the harness with v1 was higher than I wanted, so made this one a little smaller... So I'd expect less drag than v1.

Thanks Dave. Yes I think the current setup is good, there's nothing that I feel needs changing at the moment. I could just keep trying different sizes and bridle lengths, but I think I'll just fly this for a while and see how it goes. With longer bridles, I'd start getting concerned with it wrapping the keel (which maybe isn't a big deal?). The time in ground effect seemed significantly shorter, but I haven't done any timing. I started the pattern about double the height I normally do (300' vs 150'), and the glide ratio is very much noticeably shorter. When you pull the bar in the glider dives, but doesn't seem to retain anywhere near as much energy. Pack volume is fine. This 1300mm version I made with F1-11 ripstop, whereas the 1050mm version is ZPX. The 1300mm version jams slightly when pulling it out of the pocket (I have to pull hard to get it out, but no big deal). The 1050mm version comes out fine. F1-11 has more friction plus the 1300mm packs a little bigger. I went with F1-11 to minimize pack volume, and it fits nicely in the pocket. I may try a ZP/ZPX version of this size...

Also, I suspect the up/down oscillation has to do with the bottom facing edge curling in and partially collapsing - which can be seen in the video. v2 will have a different profile.