Need information that can be presented to the government on where road studs have actually reduced road crashes. Actual statistics on various roads will help. Also reduced number of road crash victims admitted to hospitals at night as a direct result of use of road studs will be valuable.
PVC would be a great idea. I would go to Home Depot, Lowes, or Osh and get pipes and pipe fittings (1/2 size). The fittings will help you get the correct shape and size without having to glue, tape, nail, etc. Make sure you draw out a blueprint first so that you know what and how much of it you need. I'm not sure what type of gun you have so I don't know how you could attach the stock. If the gun has holes for screws then you should have no problem, however, if it doesn't I would recommend making a bracket that could fit around the back of the gun that you could attach the stock to. Good luck!
No, they both require 4 rigid alum. pipe. Code does not allow the vinyl or the foil type.
As others have mentioned it is not just about scratcvhes - as much as dents. An elephant can wark over a wooden floor and NOT damage it. A ten stone girl in stilletos can make puncture marks in the wood. Felt pads, plasters - may all stop the scratches, but they will NOT stop a hefty dent appearing wherever she stands. If she slips and lands heavy on thje bonnet, you will have a HEFTY dent as well as the little ones. A clear cover on the car is an interesitng idea BUT the cover itself will only have to slip a TINY amount when supporting her weight to cause scratches itself. The good news is that black IS the easiest colour of all to repair with touch up paint! If you support the bonnet from underneath as has been suggested already and have her wear something more like a slipper with a fake heel attached. If she manages to keep her balance on her tiptoes, the heel might look fairly realistic - make it from cardboard and felt etc. Otherwise could you do some cut-away shots so that you see the car, and her, then her, laying over the bonnet, then cut back to her dancing on the car - but not showing her below the knee - as that would give away the fact that she is supported by a PADDED plank of wood going from one side of the wing to the other - so most of the load on the wings through HEAVY padding. Then finally, ULTRA close up of her feet in the shoes dancing on a bit of shiny black metal - which just happens NOT to be your mums car. Not an easy scene to make work but do-able at a push perhaps - and with ne real risk to your mums car. Remember though that black paint jobs ARE the easiest to touch up if something goes wrong - and a small bottle of liquid black touch up paint will cost you perhaps ?2 / $4 and may just save your bacon :) Mark