One of the reasons I tend to sketch fairly quickly , ok very quickly is I am not usually on my own when doing this so I try to be respectful of those traveling with me . On your own you have more freedom to sketch at your own speed and be as detailed as you like. I happen to prefer quick sketching with just enough detail to say what I want .
I sketched this one of Tenants Harbor from our hotel window . Like Danny Gregory says " Art Before Breakfast " I actually did quite a few sketches before breakfast on this trip.
This one I drew as we were waiting for the full moon to arrive . It was a fabulous moon that night.