for reds 100% boston basher, if you hit yourself before hitting the peak of your jump it basically becomes a monkey's paw double jump, considering red scouts dont have a double jump this is SO useful, you can easily use it to throw off a blu's aim while rushing them, use it to skip certain parts in minigames (if you suck) aswell as get to certain areas skipping a route that would make it easier for blus to notice you, you're able to do this 2 seperate times before dying (56 dmg each time you hit yourself iirc) and not to mention how many times the bleed mechanic has gotten me a kill, for light classes it takes only three hits to kill a blu (unless they have regen) and sometimes that extra hit matters