Interesting comment Tim and thanks for the link tandmbait.
what is interesting about your comment Tim is I had riggers mounted on a "bayliner" rigged for trolling for years, ( I know! I was one of them) and I did quite well off the riggers, for being a "bayliner," bought the Grady last year from a guy that used it only for Walleye in Lake Erie, not trolling and put my Cannons on it, even one new one, and had my first season with a big downturn in rigger production, given same areas and tackle,....I have a lot of electronics and wires on the boat,...I did test once and was in the .5 range, which is close I thought. It might be worth considering.