Fair enough Mark, my comment was slightly based on a post that Wouter subsequently deleted but also that to my mind the two classes are very different and don't really bare comparison. As and aside my Capricorn was less than 6 months old and cost less than a brand new F16 would have when I bought it.

In the UK a more realistic comparison is probably the Spitfire (16ft long, almost f16ish) and costs just under £9k but weighing 140kg. Interestingly its little sister, the Shadow weighs in at 95kgs is made of kevlar but costs almost as much at £500 less. Neither of which offer (imo) the vesatility of the F16 but do perhaps highlight some of the cost considerations in building light boats.