I would like to dip my head in and say that although a lot of bettas totally HATE bubblers, some of them REALLY like them, too! We did a little research on it because Gallifrey LOVES the crappy little bubble wand that came with his tank. When we had it on full power, he constant swam into it and against the bubbles (even though he could've just hid in the back of the tank where there was no current). Now, we have a little metal air control valve that allows us to turn the power up and down on the filter and when it's really low, he just lays by it and lets the bubbles run over him. I swear it almost looks like he's cuddling with it! (What a goof!) If we keep it on medium power he'll swim down next to the tube and ride the bubbles up to the top. We don't keep it on all the time, but when it is on he LOVES it!
I would highly recommend this air valve if you're considering doing a bubble wall -- Jarven Air Flow Control Single Way Valve
Gallifrey is totally happy with his! It allows you to control the power of the pump much more easily, so if full power is too much for your boy, you can always tone it down. And since they come in a 4-pack, you can use them for other tanks, too.