I ran a bigger one in back and a smaller one in front to control the amount of drag I was getting. If it equals out, you can get a perfect float with the boat angle w/o too much trolling motor use. Used them on Ray Roberts and Lewisville mostly, but also used them on Fork a couple of times, too. GREAT way to fish a bank or flat. Since you have a bay boat, you might need the 2 bigger ones, do not know, but I was using them on a 206 Champion and it worked great for me with the larger one in the back and the smaller one in the front. I bought mine so long ago they actually came with floats on them. Hope this helps. Tight lines, keep safe and good luck.
Tight lines, keep safe and good luck.