All true and its also why most people who trailer boats here on the North Shore have to use a roller trailer. A bunk would not allow you to get the boat on or off at low tide in many places. Here I see 85% roller mayb 15% bunk and that's been typical over the years.
Some of the spots up here you have to be careful of if boating out of Britannia:
Channel that leads in from Huntington Bay to Northport Bay, in the middle of it just outside the channel on the right hand side is a low spot, like 4' low tide
Just to the north of Centerport Beach there are big rocks awash at low tide, but even at mid tide they are not far below the surface.
Right in front of the Eatons Neck CG station, a large field of big rocks awash at low tide, but at mid tide some may be just below the surface. Stay out of there!
Coming in to Northport from Huntington Bay be very careful if it a wind against tide situation, I was there once in my little 20' Bowrider and let me tell you I felt like I was riding the Cyclone at Coney Island! I kept praying that the little 4.3 would not fail me and part of my attachment to that old boat is that it pulled me through just fine.