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25 years driving and last year I bought my first sat nav . Why - because we pull a lot of different height trailers and we were going to more and more new places with them .
The Garmin has worked flawlesly for me . Take a few minutes to set it up sort out the heights , widths , weights etc and as long as you remember to change your trailer heights when you change trailers you shouldn’t have any problems . Google maps to find the location , Garmin to route plan avoiding low bridges ,weight and width restrictions and Google for the last 100 yards to the entrance