I'm afraid the human eye ball is about the only thing that can keep you from
running into floating debris..

The stuff is so low in the water that it can't be picked up by radar. A
debris object would have to be nearly as large as your boat to set off any
radar collision alarm..

Keep a good watch and have a stout boat.. Failing that, have a collision mat
in the emergency locker (along with a plan on how to use it).


--
My opinion and experience. FWIW

Steve
s/v Good Intentions