How about what I didn't do for sailing? At last weekend's regatta I T-boned a Hobie 16 with my Hobie 18 and severely dented the 16's side rail to the tune of $200 of damage. The next day I brain-farted during the skipper's meeting and missed the admonition to avoid a restricted zone - then I sailed in it and caught the wrath of the entire fleet and RC.