With slightly larger enclosures, I really wouldn't worry about them escaping. In my experience, I use fairly large containers for the size tarantulas I keep in them, and haven't had any bolters or anyone who freaks out. Everyone has enclosures designed carefully for what they do so everyone can design appropriate hides for their species. Therefore they retreat when spooked.
Welll.....except my C ritae
They are my only bolters, but their containers are small and need rehousing. Good thing they are so cute!
Welll.....except my C ritae