I’m no Ben Plotkin-Swing, but:
I find I’m 75-100% consistent on all hops at 64 cm, depending on the day and space for prehop (sans the prehop and that consistency drops to about 50-60%). Past that, it depends on location. I have all hops up to 62 cm consistent in the 90% ranges. I find that when going above 64 cm, I have a bad consistency of about 5-15%.
As for takeoff and landing area, that depends. On hops up to 60cm, I find that I really don’t need more than a 4x6 landing area in observation, but mentally I find I need at least a 6x8 landing surface. As for takeoff, the takeoff point can be as skinny for me a 3", but it has to be at least 6" long on the axis parallel to the obstacle, because of my forward-backward inaccuracy in my setups. Once I get to about 64cm, I find I need about a 9x9" takeoff on a good day, and a 12x14" landing, just for my mental security, even if I only use about an 8x9" area.
On jumps off extremely skinny stuff, my accuracy and consistency are bad. I max out at about 14" (25% consistency at best) on a good day when going off the thin edge of a 2x4, partially because of my lateral inaccuracies causing me to not know where the preloaded tire is going to send me, along with the fact that I’ve been running a very low tire pressure lately (18psi on a 19x2.5). When doing a hop I can raise my consistency slightly by angling my tire relative to the 2x4 a bit, but evern then I need a large landing area and my consistency still doesn’t break 30% on hops over 12". I need to work on it.
As for gaps, I find I can gap 1m to a 2x4 and immediately go another 1m to a 12x18" object with a high consistency, but when I fall, I fall hard. I find my lack of front-back accuracy hurts me when I try to gap over 3’ to an 8x18" object, which is what I practice on.
As for crankgrabs, my stats are awful. I can’t pedalgrab to rubber, and I’m very shakey on crankgrabs. I find I need at least a 12x12 area to go to rubber on a crank grab, although I can pedalgrab a 30" object with as little as a 6x6 top on it. But then, I immediately go back down. Not to jack a thread, but does anyone have any miracle advice for pedalgrabs? I can’t do them. If you wish to know, i hop with the exact same orientation as Kris (I think). I prefer to jump to the left, I have my right foot back, and I hold with my right hand.
Hope this helps with whatever purpose you had in mind…
P.S. I my opinion, accuracy is much more important than height. I’d much rather be able to jump 22" 100% of the time onto a 3x3" surface, than be able to do 30" 75% of the time onto a 2’x2’ surface, mainly because most trials lines are hard because of accuracy, not size of the moves.