Hi Pirate. No as I can't weld SS as I know you can. I have never had the aluminium fail although others have. My construction method only requires drilling, bolts, some thread tapping; no great skills required. I strengthen suspect places especially around the rudder pivot holes and the top pintle hole in the tiller arm with riveted SS plate; off the shelf fitting RF27. I also know the aluminium system is lighter than Carp's.
Thanks for your interest.