i think its about timing as much as how you look when you rock up. if you screetch to a halt in the carpark with your music banging you might as well just go to the pub as you wasting you time. if you go at meal time, then again your wasting your time. if hes lambing or harvesting hes going to be busy and might not want to talk or have the time.
turn up in your new nike trainers and joggers he will probably think your a tit.