Hi TheoI had them custom made for my former M-23.  But they move if you put her on her side or really heel.  They were still a great thing to have even under weigh. CheersRobbin -----Original Message----- From: Theo Petron <lapstrake1979@gmail.com> To: For and about Montgomery Sailboats <montgomery_boats@mailman.xmission.com> Sent: Wed, Apr 10, 2019 10:02 am Subject: M_Boats: M23 Cockpit Cushions Do any of the few 23 owners have cockpit cushions? I'm having a set custom made but am stumped as to a sound method for securing the cushions as not to move while heeling/getting to the lazerettes. Thanks. Theo M23 Sails Increase