...with small hops sideways
Balance can be tricky sometimes. On some uneven shapes or edges, the only way to progress safely through a zone can be with small repetitive hops with both brakes full on. By moving sideways, alternating left and right motion, you can adjust your balance with each hop while moving through the zone.

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Moving along against an edge.
How to get it?
These are small jump impulses, followed up with a lift on the bars while folding the knees. The body weight must be quite above the handlebars, so that when pulling on the bars, you pull up the whole bike with you. Try to minimize the hops' amplitude and height, and eventually, the frequency of the hops to save your energy for the next big move. Else, you won't last very long on the bike.
Most of the time, you don't need to give any pedal kick, it is like doing fast push-ups. A good exercise is to balance across some stairs, with the wheels on different levels, and try to hop up the stairs, or sideways along the same level. Once you can hop, try to adjust your push-ups to the minimum effort. Nico's push-up are an overkill for these poor little steps. video
Nico climbing some stairways, one step at a time

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Precise repositioning forward
Change of direction
If there is some gap between the front wheel support and the rear wheel ground, or there is no convenient space for turning around progressively with a few hops, you'll need to pull on the bars and "jump in one extension" to take off both wheels at the same time and land them directly onto the final position. In some cases, a small push on the pedals just at the end of the extension helps a bit the move forward.
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Bouncing with a 90° turn
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90° turn by César
Another scenario is to turn 90° or more in one energic hop, to land both wheels onto a completely different track. When turning in one hop, the bike mainly follows the shoulders. During the push up impulsion, rotate your shoulders towards the direction in which you want to end. Try to face towards your final direction. video
Bouncing your way up
That way, when lifting up the bike, you will only need to naturally realign the bike in line with your upper body. In some gnarly steep rocky tracks, your only way up is bouncing sideways with constant repositioning for balance.