Maybe I'm missing something here and you all can help me out........
I too use a GPS ..... what I'm failing to understand is -- If you have the lake markers properly depicted (and theroticaly know where your going). Why is the "route" (or for that matter the breadcrumb function) so important?? And yes, I drive extensively at night -- probably the only time when I actually pay any attention to the GPS --other than perhaps trying to find a particular marker in the sunlight glare or extremely choppy waters.
If you are relying on a "route" -- sounds to me that you shouldn't be out there. Again, not attacking anyone here ....just failing to understand
(a mind is a terrible thing to waste -and I've burnt way too many brain cells over the years 
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