Body beautiful

Always thought i would like Dzus fasteners but in fact they are just fiddly, so am progressing with the mounting of the bodywork using Rivnuts and now 50% through fixing the canopy. This is tricky, as is most of the streamliner, that it needs to be openable from the inside and the outside, so any locking device needs to be simple and function from both sides. Again i have mates who are plane boffins, so i'm looking to them for ideas.