Infill panels: mod to prevent cracking?

[b1k3rdude]

In all the years I've been on here I haven't really seen a mod/trick to prevent the bloody infill's from cracking under normal use. I have tried the wide plastic penny washer trick, I have even re-enforced the underside of the mounting holes. But eventually they just crack.

So the idea I came up with and wanted to run by folks on here is to use do the following -

• Use 3x shouldered wide head bolts for each panel - the shoulder part just deep enough to accommodate the thickness of the panel
  
• use a thin rubber washer on the under and topside of each mounting hole - the idea Im going with is so the panel dosent rattle about, but would have to glue the underside washer in place.
  

Is my idea too extreme, has anyone use a simpler method that's lasted? and if so how long ?