do you mean, only on your application ? if they purchased a dev license they
should be able to use it.
in this case, you might want to use xcode to better protect your source code.
other then that the debugger can be turned off using
proDebugEnable -disable-all
havent tried it but maybe directing to a diff .cfg file of an install that doesnt
support debugging at startup might work ?
i dont think the -rr startup param limits access to the debugger. good luck