Another Loco broker...

That's a good one! Me too with detention. When I tell them I have an AP that needs to be agreed to in writing they always say, "we've never had a problem here" and my response is always, "good, then we won't have to bill the detention and you should have no problem agreeing to it". It always puts them on the defensive if they're lying about the load.

The ones that are honest about it never being an issue or have no problem with paying it will gladly sign the AP. That AP is one amazing litmus test. If they buck and whine, you know there's a high probability of issues at the pick or drop so raise the rate a few hundred to compensate for the hassle and lost time, insist on the AP being agreed to in writing or be prepared to walk away unless you like getting screwed and taken advantage of.