Re: 2 depth finders
With them both mounted on the transom even if oppsite side it is not going to work deeper than about 5 feet at most.
On a 19 foot bass boat with one mounted on the transom pointed straight down and one mounted on the bow trolling motor pointed slightly foward they could both be used to about 30 feet then when the cones over lapped neither would work unless you turned the other one off.