Here's the deal Tom, just check the map......NW is dead onshore at MC; yes you can get BIG conditions down there on that direction, and you CAN kite in those conditions, but IT IS ONSHORE, that much is undebatable........now, whether or not one enjoys those conditions or is competent enough to even get beyond the shorebreak is another matter entirely. The problem I see is that IF someone does get beyond the shorebreak and they are not prepared for the massive outside sets, then it could end in utter DISASTER.........frankly put, it is only the very experienced kiter who should even venture past the shorebreak on such a forcast if it materializes; Scotty is one of the few who has the skills to kite in those conditions, those are not the conditions for most kiters!!
On the other hand if one wants to stay on the inside and kite up and down the shoreline, then they should go for it, just keep it safe and DO NOT UNDERESTIMATE the danger involved in kiting in waves that are forcast to be double-head high, especially when onshore.....onshore conditions are the most demanding, and in my opinion the most dangerous; it is harder to get over the waves, the waves are more prone to close-out, and it is easier to drop your kite when riding them........that of course, is just my two-cents on the matter....and remember that it is all fun and games til you are swimming for your life.......SAFETY FIRST!!!!!!
NW winds can be kited side-on at Miller and the waves are usually smaller and more organized IF the front comes in from the NW and not the N.........South Haven is also another option, and offers the protection of the jetty as well; St Joe can be a bit more onshore, just depends on how much West is in it when the winds hit the Michigan Shoreline.........Muskegon can often be the best choice on a pure NW, but it is quite a drive.....once again, just study a good map of Lake Michigan and check the current conditions to see how the direction of the wind is affected by Lake Michigan's shoreline; it is a well known peculiarity that at times the wind is onshore from Miller to South Haven, just depends on the front!!!!!!!!!!!
Good luck, kite safe, and have fun!!!!!!
btw, Jens has a tremendous amount of knowledge in that cheese head of his.....he just doesn't like kiting in onshore conditions and Scotty does......just a matter of preference from two of the most experienced kiters in the waves........