I think he was being funny and asking why all the fish were on the left side of the river.
Obviously, you could fish the other river bank and run starboard side planers and nothing on the port side, depending on where you are. The point is, if you have planers on one side skimming along the bank structure and planers on the other side out in the channel, you're going to have too many lines to keep track of, and only rare fish are going to hit the channel side baits.
bd
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