I call it the jwo method
Indeed, that's where I first got the idea.
jwo he da man! Yeh.
I gave my Geko away. It has many good points, no serious drawbacks, and does the job perfectly well.
Small, light, minimalist, good contrasty screen - all these are positives compared with the Etrex C types.
However there was an accumulation of small niggles - worst by far is the difficult battery access, once the bike mount is in place. But the serial interface, nasty bright colour casing, limited display options, rather clunky navigation through the menus - were all annoyances for me.
And the Etrex C with map is just better 'company' on the bike. Though the display is very dim behind a highly-reflective screen cover - marginal for my shot-to-pieces old eyes - if the map were given a white background instead of a dull beige, even that would help quite a bit.
If buying a GPS now, and especially as a new adopter - I think you'd have to consider the new Garmin Dakota as well. In terms of size, styling and function (and battery life) it sorta sits between the Etrex and the Edge series. There's a lot going for it, but the screen is even dimmer than the Etrex, so you'd definitely have to see it action before shelling out.