Need help - when should I use offside trap?

[Shawn McGee]

Hi I've played this game for a few days and today I decided to try using offside trap. I've read some beginner's guide but I'm still not sure when I should use offside trap. I've read some advices here and most do not suggest people using offside trap. I guess it works best with 3 fast DC, attacking mentality in my team. Should I also consider the number of ST/AMC of opponent? My possession? Anything else to note? Thanks!