Highly recommend that Developers consider adding the white hashmark that prevents building on fishing locations as build/canceling a harbor currently will delete fishing locations. I honestly don’t even like posting this on a public forum but meh. Lot of potential for silly gamer behaviors/abuse.
Thank you for reporting @Valentine1183! This is by design, but we are always listening for feedback. We haven’t seen a ton of reports of people using this as an exploit. I will leave this thread open in case anyone does run across it. Appreciate the feedback!