Did the 20 cube attempt, result wasn't amazing but it's still a PB. The result was 17/20 54:49+, a lot faster than I expected so my next attempt will probably be 21 cubes(this attempt was really smooth). I feel pretty confident that I can get my attempts up to 22-24 cubes by August for Great Lakes and UKC.
Attempt breakdown-
I made a new memory palace and actually wrote it down for the first time, the general system is the same. Packs of 4 cubes, each cube has one location(e.g. my kitchen) and some packs have themes(e.g. school). I generally try to associate my stories with the room to make them stick better. In terms of memory this attempt was great, I didn't forget anything during exec(or at least not the type of forgetting where you sit there trying to remember something and can't). I rushed this attempt a lot- I traced a lot more quickly then I used to for multi, did minimal reviews and went really fast during exec.
Splits-
38:18 memo so 1:54.90 memo per cube(mostly reviews), 49.45 exec per cube and 2:44.35 overall time per cube.
DNFs-
One cube off by 2-twist, 2-flip and 3e
One cube completely scrambled, got my rooms mixed up and did the wrong story on the wrong cube(thankfully noticed before my next cube so this only led to one DNF).
One cube where I think I forgot to do parity
One +2