Matt Schieferstein brings word of a new regular issue flap from Shinnecock Lodge #360 replacing the S15. The likely Blue Book number will be the S36. Matt describes it:
Shinnecock 360 just reissued it standard flap with some modifications. First is the flap is slightly shorter than normal about 119mm long. The lighthouse was remade to better resemble the Montauk Point lighthouse and the tern was replaced with a real Tern instead of the other bird of years past.
Blue Book Stats:
S36 DYL R M/C RED YEL FDL; RED WWW, 360 Yellow Arrow, Sun; DGR Grass 119mm length