Saw the fg rekkie holder having trouble with this, so here's my method to get a consistent skip on this level:

I've gotten it 10 times in a row, and decided to record my last 4 attempts to give an example

Tutorial: This skip is very consistent if you do this exact method. Go to the left and hug the wall. Spew downwards in the middle of your character. Keep spewing till you have 40-45% ammo left in your bar. Then jump and keep holding jump. When you reach the apex of the spew, start spewing downwards for a final boost

Not sure how to make a guide, so I'll just post it in this thread