I had a big ugly nest stretching almost 15 meters on my Suffix line. I tried to remove it at home by handpicking knot by knot. Each time I removed a knot, more nesting would form on the line I had just unwinded. I eventually ran out of patience.
Then someday early morning I went to the sea with it and found a spot where the water current was slow. Then I started the same process, this time drowning the line as I unwinded it. This was too easy and greatly prevented more nesting and I was done in about 20 minutes for all of the 15 meters of bird nest. No need for a boat!