RE: Securing your AMA field
FWIW I'm pretty sure that even merely "possessing" or "making" tire deflation devices such as "spike strips", as discussed here, is against the law here in Texas... Well unless police or other authorized personnel...
Of course, most police officers will likely use "sympathetic discretion" and not cite you if they discover such a device but in the event something happens and push comes to shove you likely will be held accountable...