Can you backflip? If you can backflip, it's pretty easy to work that in to a flat 3. It can kind of be thought of as using your right arm and punching the back of your right knee (if you spin left). Once you get ahold of the flat 3, you can start to work that in to a flat 5/rodeo 5.
The same can be similarly said about a front flip and a misty 5 (personally I don't do either of these tricks so maybe someone else has some more detail here). If you're confident hitting jumps switch, a misty 5 on tramp can also be envisioned as a switch cork/rodeo 5. That one did scare me to throw initially, but as long as you envision what you're doing and pop on the take off, you'll come right around.
Cork 7, just make sure you have straight 7s down confidently. You can slowly ease in to that cork rotation by dropping your shoulder. I recommend coming in to the jump with a "T set" as opposed to a carving cork 7. Keep the first couple mellow and eventually you'll feel the confidence to go for a legit cork 7.
These are the techniques I used, and I had no proper coaching, so I'm sure someone out there might have some better instructions. I have also never used an air bag or water ramp. **make sure to pop off the lip**