Hey Anthony,
I know this is mystical and complicated....The left one with a screen is a water intake for a livewell pump.The 2 that look the same are thru hull fittings for drains or livewell overflows.
Hey looks like the only one left with a removeable /turnable plug is yes your drain plug.Rotate it counter-clockwise and she'll drain .
Nope, I do not own a Nitro.
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