Once you get used to it you will find it natural to asses fuel stations as you drive by. As has been mentioned, plan your route out prior to pulling in. Keep in mind that the longer the trailer, the more likely it is to have a lot of ass end swing if you try and turn sharply while leaving the pumps. While I've never tried it, I'm thinking hitting a fuel pump is a bad idea. Sounds tough, but I rarely use truck stops and seem to find places to gas up even in small towns. Have had to back out of the pump a couple times though.