Tips to build a foam plug/mould for competition radio yacht construction from a lines plan. this video is based on the methods used to build the successful. Seattle iom update. june 2014 – september 2014. iom eye candy: let’s kick this issue off with graham herbert’s latest custom boat called “popeye” slicing. Site news & other interest. august 2015: after many years of prototyping and development, i’ve made a limited edition batch of a variable "v" spreader to suit the iom..