Most of those "police and your rights" videos on youtube or other places are wrong. Cops and lawyers laugh at those videos all the time. I read on here that some cop was going to make one but for the most part they are shit.

There is more than just probable cause to search without a warrant. Exigent circumstances also come into play.

FYI for the most part cops can search you at will. Many times it falls under the guise of protecting themselves from an individual with weapons so they get to pat you down.

It is a thin line between cooperating and being hard and you never know what the cop is going to do. I have cooperated only to have the cops arrest me then lie to a judge to make things look like something it wasn't in order to get a warrant only to have to tell another judge they lied. I have cooperated with cops before only to have them let me go completely. You can analyze the situation, how many laws you are breaking, quick impressions of the cop, whether cooperating is going to help, and still be wrong. I usually don't cooperate at all. Not cooperating and being hard might get you arrested and harsher treatment from the cop but it may make it harder to convict you later on because you didn't consent to a search or make statements that can be used against you later.