Ok, I can’t claim to be a cycling or sporty type, but I may be able to help anyway. Have you tried a Spibelt? They are very comfy and designed for runners. This means they don’t move or bounce. You can get one from http://www.spibelt.com/ or support local business by getting one from http://www.funkypumpers.com/ Pump Spibelts are available but the standard ones work just as well, if you don’t mind your tubing coming out the front.