First off there are two types of participation, minimal, and active player versus player (PvP). This article is looking at the latter.

For now be aware that everything here is somewhat speculative - I have just started as an active participant myself in SvS. I am collecting here the knowledge of those who are more experienced to augment my own very minimal time in role.

Minimums

• You should have at least a +1000% buff for attack in your main troop type.
• You should have at least a +500% buff for attack in all other troop types.
• You should have at least a +%X00% buff for defence and HP in all troop types.¹

Measure this by attacking an empty keep and looking at the report.

Behavior

Do not splat. This will just annoy the other players on your server. While it might generate lots of points, it will not help your server win.