You can't have a wooden boat. it would cost carbon credits to chop the trees down.
A fibreglass boat lasts wayyyy longer than any wooden one will so it is probably more enviromentally green.
You can swim...but don't fart for propulsion while you do while you do as that is methane and flatulence will cop a carbon tax.
Face it. Big buisiness has climbed on board with all of this crap because it has seen how to put the drip into us for more taxes and money.
When I was twelve...40 years ago I watched documentaries on pollution and was shocked but very pleased we had seen the problem and trusted fully that modern man would take the appropriate steps...HA!
Burn planet, burn! Why people worry I do not know..life has been wiped out to 10% several times..the planet is just fine. It is us that are in the S***