Cant give you any about kiting but near madang theres supposed to be a few waves? Also some exceptional diving.
The country itself is breathtakingly beatiful. Dense jungles, waterfalls and rivers and mountains that seem to just rise and fall sharply. There are plenty of places in PNG that no one will ever see up close. Scientists have only just recently got back from the Hindenburg Wall and found 80 unknown species of flora and fauna.
Safety in PNG needs to be taken seriously. I know Madang is a bit touristy but places like lae, poppendetta, moresby can be very uncivilised. You really do need to exercise caution. IE in some places local women wont leave their daughters alone... certainly not all groups of people of course. Kiori people, for example, are fantastic.
Unemployment is huge and crime, violence and corruption are all areas of serious concern throughout the country. Some places a whitey simply isnt welcome and i was speaking to a bloke a few weeks back who's life was genuinely valued at 1500 kina. Another aussie pilot i was chatting to was held at gunpoint, face down and was "robbed" for around $100... it was the police

William Kapris (PNG famous bank robber) was finally found (and killed) last week after 3 months on the run after escaping prison for the 3rd time. I heard from local sources that he overpowered two prison guards and stole their semi automatic guns, wallets and phones before escaping with 2 others. In a poor country money can buy anything.
Healthcare is basic, i spent 2 hours in emergency at the best hospital in moresby and while the doc was great and the place clean, it was pretty basic. Next to me was a bloke suffering bush knife (machete) wounds and the nurses were actually on their phones texting lol.
There are always 2 rates.. whiteys always much pay more but my time in ER cost me about $100 so its a lot cheaper than i expected. Education is generally poor as well.
For all its negatives there's something about the place and people (well some of them) that makes it incredibly special and like any of these places, if you exercise caution and use common sense you'll love it. I'd definitely learn some pidgeon english though, It'll help out heaps.