Typically 1 oz for every 10 f.o.w. is the rule of thumb, I don't put anything into the "line at a 45 degree angle" rule, straight down under the boat works most days. When I'm running multiple rods and trolling with the rods over the side of the boat no boards, I'll run 4oz at the front, 2 or 2.5oz in the middle and 1 or 1.5oz off the back corner. They won't tangle if you let them out with your thumb lightly on the spool. As soon as it touches bottom lock it right there if you want to be about 1 to 2 ft off bottom, crank it up 4 or 5 cranks if you want to be a few feet off bottom. If i'm running out of Lorain and fishing 60 f.o.w. I run 8oz up front,6oz in the middle and 4 oz off the back corner. I also run inline weights on one side and bouncers on the other as there are alot of days where the inlines out produce the bouncers. I have inlines up to 6 oz.