Recently I obtained a LOC 163 kit. However, when I opened the kit I found that the plywood disk given to me to allow for ejection charge gasses to pass and pop the 'chute didn't come with any holes. I figured this wouldn't be much of an issue since it would require a drill and some spare time to fix. However, I have been wondering if there are any general rules of thumb for the size of a hole to allow for ejection charge gasses to pop the nosecone off instead of accidentally ejecting a motor or motor adaptor. Considering that this is on such a small scale too, what do you think might be the best way to ensure that the screw-in eye bolt is secure/the disk (with ejection holes) won't break under a relatively high-ish load? I plan on making an e-bay for the rocket at some point to house a tracker/altimeter for much more intense flights.