>>34290438No matter what the height of the wave, always opt for max speed. The only time you should jump before hitting orange speed is when you're about to hit an obstacle. The main goal is to do as many jumps as possible, so don't waste too much time doing anything else. Gain speed ASAP and jump.
Remember that you don't have to go for full combos. Throwing one or two flips/spins at the end of a combo before you land still gets you points. Just don't sacrifice your landing bonus, the loss of points and speed is never worth it.
The first big wave you get you should do Magikarp Splash + a simple combo for a quick 6000~ points. Otherwise when you have the speed and height always opt for the combo that gets you more points with the appropriate wave + a simple combo. This is why max speed is so important, it means you can almost always fit in two combos. I feel like mixing it up every now and then with a Starmie 720 rather than a low/high combo gets you more points but I'm not sure.