Here are the materials: clothes hanger < 1 USD, magic tie $0, rubber band is from collard USD1.49/Lb

Without tools and after folding the hanger, my gps unit can be placed as like this

In a car, the unit can also be hooked at the the bar of the board.

It was stable when the speed was close to 100 mph on a state highway. There was almost not a swing if I did not make a rush turn.
The lake or a pond has several names.

The gps shows the location of the lake

The good of the frame icludes that the unit is easy to hook and take off in a car or a backpack. It is also convenient to allow the driver's left hand to operate the unit.
The bad is it looks ugly and shows the owner how lazy he is. It is not proper for a manual car to let the driver operate it.
p.s. Could someone tell me where I can find a lake just like the picture in taiwan? It was so comfortable and peaceful when rowing a boat to stop it in the center of the lake. I plan to have a 3-seats canoe and to ship it back to Taiwan
