Robber Dimensions and Twin Fin Placement

Hi Guys,

 

First time posting here. Been a lurker for awhile. I’m keen to try to make something resembling a Channel Islands Robber. I think the stock dimensions of 5’11 x 19 1/4 are the way I want to go. Does anyone have the nose/tail width @ 12" for the Robber? Also, where would you suggest putting the fins?

 

Thanks much,

 

Nick