Being an engineer (which too often means over-engineering), and being paranoid about wanting the option of module removal without a huge amount of groveling, I came up with a solution for mounting dual Light Speed modules that made for one-screw removal. This is probably less of an issue with a tip-up than it is with my slider. I wasn't comfortable installing access panels through the forward skin.
The modules are fastened together with a "hanger" bracket that is suspended from an angle bracket fixed to a subpanel rib. Posts on the hanger bracket engage rubber grommets in the angle bracket. By removing one screw at the bottom (which goes into a nutplate) I can lift the assembly up, slide it out of the way, then drop everything. After which I disconnect the connectors and remove the whole thing. I've already had to do it once to get the modules upgraded; as much extra work as it was to initially design/fabricate/install, I was glad I went through the trouble when the modules had to come out.
Here are a few pix:
More at this link.
If anyone's interested I can provide more details...