I'm a huge Smith & Wesson fan...
That having been said, I haven't heard a lot of positives about the 317. Trigger press is heavy, accuracy not remarkable (although it's not really a super requirement for a kit gun). And they are high as hell.
I'd seriously consider a Ruger LCR series gun. For a fishing gun, a polymer frame can be advantageous - keep it light, one less thing to rust.
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