Which of these boats is the most recent design?
Well remembering that there is nothing new under the sun, the one on the right, the Puddle Duck Racer was devised in the last few years while the Enterprise dates back to the fifties.
This is Bob, he's a bit of an inventor, he built this PDR in his shed and called it Dumpster. The thing about the PDR is that the only restrictions are the underwater shape which is pre-defined, the rest you can pretty much do what you want. Bob's is a very conservative design compared to some. Neat and functional. You can find out more here. http://www.pdracer.com/
Bob had great fun sailing his little boat all over Chichester Harbour, however Dumpster is a bit slow, so he always tried to leave about an hour earlier than everyone else. The Roller reefing design was borrowed from Al's Paradox, below, and it works like a dream. Pull the string and up she goes, pull another and down she comes. Simples!