Aero06x, I tapped into the fuse box (on the firewall, just beside the drivers side hood hinge) and spliced in a wire leading to the interior with a very simple on/off switch. In the off mode, it keeps the wing down until you click it on. But you have to slow down to below 35 mph before it comes back down on its own. Then you simply turn the switch off, and it stays down until you want to put it back up.
The only side effect is a red light will flash on your wing control button, but it is positioned so low on the console that it's easily overlooked, even at night.
I really like being able to control the wing instead of it controlling me.