http://www.horizonsunlimited.com/hubb/south-and-central-america-mexico/crossing-darian-gap-only-230-a-42769#post252653
Trip report on crossing the Darien Gap for $230, took ages, 5 separate boats, lots of wetness, sounds like an adventure!
http://www.hostelwunderbar.com/
Hostel in Panama recommended on the HUBB (horizons unlimited) as a place to start a crossing of the Darien Gap in Panama.
http://www.farklemasters.com/
FarkleMasters import the Rain Off motorcycling waterproof over gloves from New Zealand into the USA.
http://www.rejex.com/
RejeX is a thin-film polymer coating designed to provide a high-release surface. Can be used to treat motorcycle shields to repel water and make bug removal easy. $15 a bottle. Perhaps worth checking out if Raincoat doesn't work out.
http://motosolutions.com/
Moto Solutions make 2 products, Fogtech and Raincoat and anti-fog and a rain protection product for plastics including motorcycle shields. Looks excellent.
http://www.latexnet.org/~csmith/sausage.html
An essay on motorcycling from the uniquely peculiar perspective of Hunter S. Thompson.