Given that the market can buff 11x11 (radius must be some internal grid calculation and not green field tiles).
WHERE on the island would this building be placed - that would give the MOST coverage.?
And How many buildings could technically receive the buff based on the location.
I think there are only 2 or maybe 3 possible location that would maximize this building less one building short.
(from what I can tell, 9x9 and 11x11 doesn't make any difference. it only makes a difference for outer most layout that have buildings not aligned perfectly with the market) Total Number of Buffed buildings between a 9x9 and 11x11 are the same no matter how you set it up.