Never skimmed before

[comono]

Well I'm new here and i want to start skimming ive never skimmed before i dont have much cash so i was planning on buying a board used on craigslist, i dont want to buy one then in 6 months get a new one I'm 6'3 and around 175 lbs. I was wondering would it be bad if i learned on a zap pro or an exile recruit? these are the two boards ive been thinking about-http://miami.craigslist.org/brw/spo/2305523157.html http://miami.craigslist.org/brw/spo/2292486063.html

what shud i look for before i buy them? and which would be better to start off with? and so what should i get?
also i have a very large foot (size 16 mens US)