Larry Sheets in Westminster is a full infield. There is an indoor dome in Howard county somewhere. I was there 1 time about 5 years ago so I don't remember the place.
The Dome off of Rt 97 in HOCO has been closed for about 5 years. Depending on where you are , you may want to consider the following; Frozen Ropes(AA County) BATT Club(AA County) Maryland Baseball Academy (GAITHERSBURG) Extra Innings(Laurel) Acelerate Your Game(Savage)
All of these locations have turf areas that allow for infield practice. None are as large as Sheets.
Economics... They shut down around the same time the S****r Domes in Elkridge and AA County were starting. It also costed a lot of money to heat that space in the winter.
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