Since no one else has replied, I have seen a battery tray made out of plastic that attaches to the CF rods that you can just drop the battery in if you are just going to be hovering. Don't remember which forum, but either the honeybee or the blade cp/pro, or other 300 size electric heli. I personally just use the rubber bands, and the super skids battery tray. To me it seems more sturdy than the stock tray.

I actually have the opposite problem as you. The velcro sticks on too hard and i have a hard time getting the battery off. I also taped the blue heatshrink that comes on the stock battery to the rest of the battery, just so the velcro didn't rip off the heatshrink.

If you make sure to clean the area real well (like with alchohol or something) before you attach the velcro, and it sticks real well to surfaces.

I got some nice velcro straps at the dollar store that are supposed to be for keeping wires tidy. I thought about using them, but the rubber bands work quite well for me.