I’m relatively new to the hobby, having raced at club level with an Isis and now a Lintel for about 3 years. My next project is building an ‘Alternative’, so this thread is obviously of interest. I notice some use cedar and others balsa planking; what are the pros and cons for each? Do both need finishing with fibreglass and is there a generally preferred plank thickness and width? I have built planked balsa and ‘glass hulls for mtb’s etc in my scale modelling days - usually 6mm x 3mm planks.