When my PCs are searching an area and aren't under time constraint, they take 20. If there IS a time constraint, they'll take 20 later.
This means that generally, whomever has the highest perception check is the only searcher that matters, and if the DC is one higher than 20 + his check, then nothing gets found 100% of the time, and if it is equal to or less, then the secret gets located 100% of the time.
This means when I'm making secret stuff in a dungeon, the players will end up finding some of it or all of it, and anything with a DC higher than that magic number may as well not be generated.
Honestly, I'd like this to be a bit more random. Perhaps I could do this with dungeon design, but perhaps I need a house rule instead.
Any ideas so that I can generate loot that may or may not be found?
