Ever noticed that you can't just walk into any old newsagent and expect to get a windmag? More like you can walk into any old newsagent and expect not to get a windmag!
Well now that's not a problem.
Found this site called "zinio" where you can download magazines to your computer, install their free reader (which is very good any includes a few nice touches such as pages actually looking like they're turning, remembers which page you were on next time you open it etc) and start to build your virtual library. There's no time limits and you can get back issues for the same price as the current one (without having to pay for postage!)
here's some windsurfing mag search results (the site has all sorts of other magazines too - probably even jazz mags, WINDY MILLER)
www.zinio.com/search?q=windsurfing+boards&d=mtIgnore the 6 or 10 issues prices on that link cos if you drill down into the mag you like, you can get single mags at pretty competitive prices - certainly much cheaper than the bookstore.