From a pedal grab, you use a swinging motion and a little hop, kinda like an ollie with a skateboard, but being done with your cranks, to get the uni onto the ledge. Or, from the pedal grab, just scoot over to a crank grab, and jump directly up.
Not really. I have one on my trials, but I do grinds so I need it, but the plate hasnt let me slip off from ledges that I am grabbing on, but once you get to the point of grabbing the top or somewhat rounded poles, and rails, it may have you slip off, but practice would help that. A pedal with a grippy under-surface would be better.
Practice. With rolling hops, you can get some good height, but cant always use that in trials, unless your objects have a good run to another object, but that doesnt happen too much. SIF hopping allows you to tuck more for added height, but riding Seat-in is still good, just keep practicing.
Also, mentality is a big issue of it, you can jump higher than you think you can. Go to a parking lot that has a light in it, the one with the light pole stuck into a large cylinder of cement. Hold onto the poll with one hand, and try to crank grab onto the cement ledge. Youll probably make it, but now realise, you didnt really even use your arm on the poll to pull you up. Now try it again knowing you can get that height without using the poll.
Kona Jackshits. Cheap, strong, grippy.
Not too much, but it would a little. Its more preference and getting used to riding, but getting rid of the flat edges would help.
Pump it up to 30. Go off a decent sized drop. Did it hit the rim? now try jumping up something. is it too much pressure to get compression? You want it the lowest pressure to be able to get good compression but not bottom out when doing larger drops. Start at a high PSI, and let a little out until you hit your sweetspot.
I am a 173 pound rider, and I keep my CC strictly at 30.
Everything, pallets, stairs, skinnys, gaps, weird angle jumps and landing, posts, logs, everything is an obstacle.
Same as question 7 kinda, just smaller obstacles that are more technical and need more precise takeoffs and landings. You cant go that big inside, so work on the fine tuning of your trials riding.