There are 3 types of flowriders. Those are:

Beach Break-

A sheet wave, and the most basic one. Water travels straight back over a hill. Looks like:

The next type of flowrider is:

Retro/Mega Retro-

This is a flowrider that travels back and has a curl in it. Bigger than a Beach Break. This is the flowrider that I ride on. Looks like:

And me flowriding:

The final flowrider is:

Bruticus Maximus (B-Max)-

This is the largest of the flowriders. Has a navigable, large tube. Looks like: