Skip fireball electric and go all the way straight to some brake line tubing that uses hardware store mini cable like you might use on a throttle, and is operated with a handle.
The business end can be spliced to a hard wire and even something as complex as a return spring can be installed over the line to cause it to stay in place better when not in use.
That is the method upon which our canopy release relies , works well. However , the route to the cab from the tail is a "wong and linding woad" past many hot spots ...adding that to the necessity to make a handle in an accessible spot within reach pushed us toward the electrickery in order to be ready for the now not happening event.
A very famous streamliner car had the electronic whiz bang model actuate at the starting line the first time , and dump the clean laundry on the dirty ground.
A very famous two wheel BGS did that here......I seen it , I'm quickly becoming convinced............
For the device that keeps the doors open, and limits their travel, make an over center linkage from flat stock that won't return without a human touch once they have been activated.
Because of the shape of the tail at that point the path of the doors as they open is not perpendicular to the centreline , so far our efforts in that style haven't really done the bizzo....the doors travel through 180 degrees meaning that the linkage needs to go somewhere when the doors are closed and not be in a position to become entangled in the "linen"...........
Air horns are great for the return road, and herding spectators away that tend to crowd your space.
My favorite is the person that has not recovered from bumping his head on the hood yet , and is already grabbing his chest.
ahhh the air horn is King when....
1./ someone is working on a hot motor.
2./ someone is working on live electrics under the hood
3./ in the car next to you is the person who has been winding all over the road ....and they are STILL talking on their mobile....with their window down
4./ you see two people who DEFINITELY aren't meant to be in the same place at the same time , don't forget to wave!