I don't spin, but my camp mates do.
Also, they just use the Coleman White Gas, and don't mix it. So, it might be a little different.
For transport, we will typically bring cans that have been opened and slightly used or more. We try to make sure that each can is short about 1/4 of the can. The only reason we do that is that when we change elevations high and lower (happens a lot of times coming from CO) the gas and air inside the can has room to expand and contract with out putting too much stress on the can it self.
Then in camp, we just store the cans of gas in the shade. Normally out side of the kitchen
Often times under the box truck behind one of the tires, or someplace out of sight. But, not under any vehicle which will likely be turned on during the week.
We store all our Gasoline, white gas, and the generator under the box truck, as there is always shade, its well ventilated, and we're able to chain the generator to the leaf springs or some part of the truck chassis. And since people aren't walking around under the box truck there is little chance of someone knocking over the gas, or stubbing a toe on the generator.