I went flying this weekend. I had ALL my licenses / files / first aid and survival kit / manual / ATF / Weight sheet / maps and plenty more, in a back-pack in my aircraft. (this was NOT copies but all the original stuff. I wonder what will happen if the get destroyed in an accident). Sitting on 50 lts of petrol, I decided a 1.5Kg fire extinguisher WILL not help if something happens so I left it out, and will do so when going to fly. DO you think that any freaken fruit fly turned up to look at my stuff……you must be joking.
Point to be made. Fly when it’s cold and miserable and you won’t see them at the airport
SoloWings used to make a little luggage carrier from Fibreglass that fits to the underside of the boom. It would be perfect for a folder/file as well as all the other bits and pieces excluding the fire extinguisher, and would leave your side panniers free for packing space for flyaways etc.