For your central scoreboard, build the river out from it and mix the river mouth tile with the other river tiles. When it is drawn, you could then layout a large lake, and if you wanted to include other river mouth tiles, then that gives you the option of other sections of river. Unless you are using The Coast at the edge of the table, I'd recommend creating a closed lake area so you don't have a large area of the table that is unusable.
Interesting. Please describe here tour test games. We have in our plan to create page for both expansions (coast and centered score board) on WiCa in Fan Expansion section in near future.
Started by Murphy013
Started by Whaleyland