[Underwhelp]

In order to make this work EXTREMELY well with current limitations, you need to add your own OMC, Portal to fly, or Teleport . Helps to change the location data as well as create your own meshes, just to fish. Easier to avoid issues building/saving meshes if your only covering the areas your interested in, as well as customizing how you move around the map. Where you'll stop to fish will be , custom to your own location data if you do modify , this can be done by viewing the DEV monitor in game for your current location, and overwriting the default locations in the add on folder location.info file.

I have done these adjustments for all Red Scrip fish, few Blue Scrip Fish, and the ones that you can reduce.
Almost never run into many other fishers at all, modified as such, and will fish like a champ.
I ran into too many issues attempting to modifying the huge nave meshes for HW areas that are included. Odd crashes would occur, think just to large.

As well, if all custom maps your pathing will differ greatly from any other users.

Also I have encountered the same issues as Bandit420, Point #1 - in regards to fish eyes, I have that occur even when cordials are not involved sometimes, yet i restart and it works fine sometimes.

Point # 2, I noticed this awhile ago, yet I went and changed most location data since so can't comment much now.