Cornering - proper, safe and fast
Jumping and Manuals
Body position and awareness of where wieght is on the bike to help generate maximum grip
Too many to count! Probably wheelies if I had to pick a MTB skill. Otherwise pedal kicks for Trials skills.
Is this a trick question?
Track stands or manuals
Going faster than I'm comfortable with now..........in control.
I'd like to improve whatever skills contribute most to riding skinny obstacles with confidence.
Another good question I have given this some thought in the past if there is one skill that I would want to improve and I use the most it’s cornering even know right now I’m practicing wheelies and wheelies probably have very little effect helping while riding trails
Manuals. And not even the cool-guy long ones; I'd settle for a three second "trail manual." I can't even manual my front wheel high enough to have to worry about looping out. A manual seems like the key to so many other skills, so I am going with manuals.
Drops. I just finished the Rock Solid Drops course, but I want to continue to get better.
Track stands on uphill skinny features! Fear of Losing my momentum on these continues to thwart me from even trying many of them.
That would be trackstands to start with, I guess.
Manual. Former road cyclist here, got into MTB 10 years ago or so. Switched to flats from clipless due to my crash fear. Technical skills still lacking but slowly building. Manual is probably my next step. Zero manual ability.