Keith

Welcome.

I don't have any bad expriences with GPS's - partly as I have only just got one for marking downed game - I am lucky in that my military training taught me to navigate with a compass, protractor and Map to Ground.

Where I see a problem with GPS's is that
1. If the unit failed, generally people don't have ANY Navigation, Map Reading and general knowledge to fall back on.
2. Some people can use a GPS but can't even use a basic Compass.
3. Re Batteries failing, people say - Oh, I carry a spare set of batteries but this doesn't take into account if it gets dropped in water or they do get lost for 3 days.

A Bad example of the type you are using that I have seen is GPS's used in boats traversing back to harbour etc. The GPS tells you the straight line direction to go but doesn't take into account Tides, Wind, Sand Bars etc which is what TRUE Sea Navigation takes into account.

Just my HO but I like what you are doing.

500 Nitro