Sorry gents but i can no longer stay out of this debate. I have been working in the aviation industry with a major canadian airline for 30 years in the structures end of it and I have to agree with Wayne. If welding aluminium was better and more structurally sound the aviation industry certainly would have gone that direction. There is no way that an aircraft can hurl through the air at 500 miles plus an hour with a welded hull and structure.Welded aluminium boat hulls are no where near as strong as riveted . And by the way I am one of those trained Monkeys that can rivet and wouldn`t have it any other way.
Get a aluminum hull cleaner from a marina , Captain Phab works really well. Your hull will come out a little on the dull side but it does come clean. My boat stayed in the water at the french River all season and it came clean.
I`m afraid that the 20 million dollars will all be spent on commities rather than viable projects that will actually improve the lake. Only $500.000 allocated to the cause so far . Thats only 2.5% of the total ....