Prop Boosting

Prop Boosting is a trick which makes you get a speed/height boost by using the prop-grabbing mechanism.

Explanation and How-to

While jumping over a prop, grab it and before it gets into your "hands", lift your crosshair. The prop will position behind your back and by trying to get in-front of you, it'll start pushing you, giving a speed boost. You can also use this trick to make the prop give you a height boost, you can do it while the prop is below your feet, and lifting the crosshair will make it lift the player.

Notes

It might be possible to do the same trick by using a Gravity Gun, but it's unsure if the prop you're holding wont get automatically released when it gets behind your back.