Folks, A couple weeks ago I read a post about using two trolling bags that are tied together. I can't find that post. I was wondering if anyone could send me the link. Also, I remember reading in that post that the size of the bags you use is dictated by the length of the boat and engine HP. I tried to contact Amish Outfitters to ask but they have not gotten back to me. I have an 18' Tracker Targa with 150Hp. Should I use 15" bags or 18" bags? Thanks