Landing next to the base and not attacking it but an enemy unit.

[swimj]

But also...if you're playing someone who you feel is a lot more experienced than you, it's unlikely you can win with a coordinated attack, since their strategy will just be better than yours. In that case it might be better to abuse FTA and get some early damage in with runners and hope you can slip in a soldier/runner later. Can work on long nine/sharkfood.