I live in Chicago and want to skim lake michigan. I'm a certified newbie when it comes to skimboarding. Waves are pretty small/non-existant for the most part by the city. I weigh 160 and I'm around 5'9''. From the research I've done so far it sounds like that I would want to maybe get a L to XL board so I have more float which would be better on the lake. Is this true? I would think that most of it would be just how fast you go if there isn't really any waves to go on. Right now I'm looking at a used carbon exile XL that is 5/8'' thick on skimcity for $330 and was wondering if this would be a good buy for someone boarding lake mich. Any help is appreciated.