In a lot of ways, Dwight a member on here and you have ponds with similar fish communities. I would contact him and see if he'll give you the ways he has managed his pond over the years. He is growing some very nice sized specimens of several species in his 10 acre lake. I don't know if he has walleye in his lake as I can't recall him mentioning them, but I do know he has all the other species.
I'd love to see pictures of the pond, different sunfish and the topminnow species you talk about being in the pond. I'd really like to see a picture or 2 of the stunted NP you're catching through the ice.
I think the addition of structure would be beneficial and a cheap project for interested members of the HOA. I agree that pike present little to any danger to swimmers, particularly in crystal clear water like your pond has where target identification is not an issue.
