Plan B is Gorilla Glue, it's basicaly ca glue with rubber in the compound for shock resistance, its good enough to keep the tyres on my RC race car for the long term.
Plan C: http://www.richco-inc.com/products/circuit-board-hardware.htmlScroll down about 3/4 of the way, and you'll find edge-support standoffs.Plan D: If there are large unused areas, then you can drill a few holes.
<stereotype>I believe a lot of electrical engineers are mechanically challenged and forgot their basic physics of torques or forces. I probably get tomatoes thrown in my way but that's what I see in my not-so-many years teaching them. If you bring 20 students, 10 intended for EE and 10 for ME, I can tell pretty easily maybe correct 8/10, even with them only as intended majors. Those that dress more neat, pose a little better and look with more focused eyes are mostly ME majors. Those that don't know how to stand straight or where to rest their arms or land their eye sights are probably EE majors. In their senior years, some EE major (guys, mostly guys, very few girls in either major) would grow some beard and look kind of rough (of course, long lab hours could get you that) but ME students only look more sharp on the appearance. I'm arming my tomato shield to level 9 now...</stereotype>