Biggest I have ever built was 10,000 sq. ft., that was a commercial deck. Done several in the 2500 sq. ft. range for homeowners.
Wow, just watched that video. Bogus tips there mate. First of all don't install your decking with nails, use screws. Second, don't stagger your fastener pattern. I always pop lines for nice straight lines. The most basic rules of carpentry are, square, level, plumb, & straight.