How to organize /opt?

I'd like to place a handmade script in its conventional place and folder structure. It's currently located in /opt/chkobm/chkobm, but it seems like a bad practice since it requires $PATH to include wildcard paths (/opt/*/) From TLDP (section "Linux Filesystem Hierarchy"): > Programs to be invoked by users are located in the directory /opt/'package'/bin. Firstly, is there a consensual rule about where to place such files ? (/usr/bin looks to me like a viable alternative place) Secondly, should I place handmade scripts to /opt/*/bin/ and export this path to $PATH ?