Spamming the tricks is how you level each of the boards (to 30) and then dumping it. Not exactly challenging.
The controls / directions for each trick is available on the PAUSE screen while in mission (under the Waverider option).
Have to agree, but the easiest one race to get 3600 points seems to be the one near the Pearl (random spawn each day/time/whatever). I recommend dumping your game on SOLO, and just spamming that one race until all 5 pages are unlocked (the remaining tricks on each page are easily done on the big pipe near Fortuna's elevator).
Naturally, I have all the K-Drive mods at max, and a fully forma'ed K-Drive, so I can fit any combination of mods on it for earning trickpoints.