The following video contains a bunch of tips cut together from videos by Jeroen from Survivalruncoaches. The video is in Dutch, but you might still get some inspiration from the footage. If you see a technique you’d like to know more about, don’t be hesistant to ask a trainer or fellow Sloper.
Some of these tips are pretty advanced, make sure you got the base down first and never try anything alone. The tips can also be found in this forum post by Maupé.