As per the subject, does anyone know if a Goya shim to convert an SDM boom head to an RDM mast will work on a Simmer boom? My location means I rely on mail order, so I can't try in the shop

I'd be given Mark at surf and sail a call .he sells Goya boom s ,my naish insert fits my Art boom head ,and it looks identical to the Goya .
also the Chinook looks very similar ,you can always buy the Patrik one and trim it up with the grinder to fit done that before .pic ,goya boom then chinook ,looks the same .

Thanks Tardy. I had been looking at that Patrik unit on SS and thinking it looks the most likely to work. I'll get one.

HI stretchy check the chinook one it looks closer to the Goya . I reckon it's closer ,Mark will measure the head ,he's a helpful guy .
they are probably the same

Got the Patrik shim and it fitted my Simmer boom perfectly