Well, I like titanium. I even have a couple of titanium rods in my foot (it would have been surgical steel, but I asked for titanium) laugh

Anyway, I could probably lose 5-10 kg and still be healthy and able to row as I do today. But anymore than that, and it would be a problem.
In reality, although losing weight is cheap, I'd still prefer to have a lighter baseweight on the vehicle. 40-50kgs would be great.