are the fpvlr antennas worth it

OK, so I got antenna boosters from Amazon(can't remember source). No instructions in box. Pretty simple mounting, but they both have a clear plastic covering. Should these be removed prior to use?
Also a small, cloth, lens wipe looking rectangle. To polish surface?
 
Protective films can be removed. The wipe cloth is to wipe your forehead after flying distances you never thought possible..
 

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