Holding your partner real close does help with the Tango, considering you are positioned more to the left(for men)/right(for ladies). Personally I prefer "steal arms" though, no matter how close you hold your partner, because whatever the man does, arms are the first thing you (well, at least *I* do!

) notice when he tries to manouvre you around the floor. I hope that helps!
"Carpe diem, quam minimum credula postero." - Horace