600 odd in a day is not a problem , been there done that
Snap, longest I've spent in a 3 wheeler has been about 14 hours on the Nordkapp trip.
If you're going to be doing anything above town speeds then you'll need some ear protection just to keep the wind noise levels tolerable. I've got a pair of molded ear plus fitted with a decent set of head phones which is plugged into my iPhone.
The provides some music on the move and helps reduce the wind assault on the ears. If I do more than a hour at speed in the 3 wheeler my ears are ringing for hours afterwards.
