You don't have to worry about being strip searched, because nobody is strip searched. At any point in the search you can request to stop the search, and tell them you won't fly. If you do this you may be required to speak with the national guard and/or police.
If you decide you do not want to proceed be polite and courteous and everything will go fine. If you are rude and disorderly, plan on wasting a lot of time while the police check you out.
If you do not like something security is required to do (like make you open your belt buckle) you're best bet is to keep it to yourself since they are just doing what the TSA requires them to do. Besides, arguing will not get you out of anything (and will probably result in you being "randomly" chosen for everything if you know what I mean.
This obviously isn't legal advice, but is based on what I have seen. BTW...the best way to avoid being searched is to remove EVERYTHING from your pockets. Yes that does mean keys, gum, cell phones, pens, ammo, sight adjustment tools, etc. And don't bring pocket knives, swiss army, leathermans, cuticle clippers or scissors because they will be confiscated.