I may have missed it in the OPC docs,

Is there any way to prevent bots from generating a OPC one_page_checkout-na-xxxx-xx-xx.log file?

Seems as though bots navigate straight to the OPC page without any other site navigation and cause the OPC debug files to be generated as an annoyance.

I understand if the answer is that is just an annoyance that is not easily intercepted.
I am sorry if I missed the answer elsewhere.