Yesterday while fishing the Crowder area, on two different occasions, The same boat pulled up in front of me and started fishing the same bank I was fishing. This boat took a position about 20 yards in front of me each time which created a situation where I had to fish behind it down the entire length of the bank. My question is, "What is the proper distance to give to another boat when fishing the same bank?" Is it considered bad manners to pull up in front of another boat which is already present, or is there some spacing which is considered ok. Any comments would be appreciated.