Even though I work with stripers and am stationed at Nockamixon I can't help but be particularly impressed by that fish. And it is the third one of that size that I saw in photos from fall, 2016. Clearly, at that rate, there are likely more where those fish came from.
If you have an itch to try for Muskies, this may be a good week as the ice has disappeared and mid to late week air temps are supposed to be on the rise. Based on ice fishing results over the years at various lakes, Muskies do not necessarily venture far off shore in winter. And, right now the Nock is fairly well loaded with Muskies, which should be another incentive to give it a try.