The bottom is a little harder up here in my part of the world (come to think, this time of the year, the top is too!). I have touched the bottom gently a few times exploring new anchorages but the one surprise I had was rather like Nelson's - going by a gravelly ledge I must have passed a hundred times...not paying attention, I cut the corner and...aground I was. Got all the crew (mostly kids) on the end of the boom and we were soon off. However, I was glad I did not have the shoal draft version that Bill & Mary sail; the extra foot of keel protected my rudder from damage. Horses for courses I guess.