one of the most useful features for me on a gps...is marking points of interest...where Ive shot/spooked deer...big wallows,lookout clearings,bush clearings,creek clearings...when in area I can then look at enlarged map and see where the heck I AM....even using old yellow etrex I could do this by asking for nearest way points and dead reckoning it from there. one simple trick I would never of thought of...when way point is say 200mtrs in west direction...use your COMPASS to head off in west direction as if travelling slowly through thick crappy bush your speed isnt always enough to give gps your direction of travel so arrow points all over the show,not necessarily where you should be going.
snail trail is good to proove where you have been.but gps needs to stay on top if not out of pack to be able to get enough signal to keep plotting or you will just get a straight line from last point of signal....
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