What you have described is a "tactical rounding", not a "seaman-like rounding".
Seaman-like means that you just have enough room to round. According to US Appeal 20, “Room is the space a boat needs to pass the mark in a seamanlike way, not the space she would take to pass the mark in a tactically desirable manner.”
No kidding? I didn't think there was much difference...that will count for my "learned something new today".
