The speed team I'm grinding towards lack power. So to balance that out I want the stadium to counter HRs.
You got a speed team? Get Polo grounds and hit gappers
Forbes classic stadium is probably the biggest overall
Polo is deep to center but under 300 down the lines
Forbes is easily the most difficult park to hit HRs in.
Forbes, but day games there should be illegal.
Red Rocks and Wagonman are nice minor league options as well.
Polo, Dodger stadium (I struggle every time I hit there), Forbes field, and Griffith.
All of them!