Hi, I'm new here so please excuse me if I commit any forum-sins (I'll try to stick to the rules....)

I travel quite a lot in Africa - I'm just going back for another 6 month stint there.
I've previously always used my Zumo 550 as my GPS of choice (just happened to be what I had) with T4A mapping.
Just recently I've realised that the Zumo might be worth a bit more than what I'm happy to leave lying around in the truck cab, so I've been looking around for something "cheaper" that I wouldn't be sad to lose.
In my box of tricks I've got quite a few older C510s, the only thing that these don't do for me is tracklogs (I find them useful to backtrack when off road etc and to see where I've actually been later).

Is there any way to add this feature to a C510 by any (slim) chance?

Thanks - great site.
Ian