How can I detect a hitbot making trouble for my tgp?

[Ramster]

I'm not an htaccess pro but ya you have a problem there.

Could be a hitbot or someone trying to hotlink you.

Does your current htaccess point to your tgp page? If so change that to a 404 page with a link to the tgp page as that is not a good thing to do. In essence you are img src'ing yourself if your htaccess redirects to the tgp page.