We have let the grass grow in everywhere on our rec fields. We want to just cut out areas around the bases and keep the rest of the field grass, kinda like in the Metrodome. Does anyone have any dimensions for doing this?

This is not an answer to your question (sorry about that) but a question about letting the grass grow in. We are considering doing the same with our JV field (never used for games) just because we don't have the time to maintain it otherwise. I would assume you all seeded the skin area with the same grass as the rest of your field? Did you condition the soil at all, or just seed the existing infield dirt? And how long did it take for the grass to come in strong? Thanks