Watching both rugby and the NFL on the same day, it is very obvious that the tackling technique is very different in each sport. I hope to hear from people to play either sport as to why they tackle the way they do, since the object in both cases is basically the same, to stop the ballcarrier. Of course, the rules are a bit different (like holding the shirt is allowed in rugby), and also the gear in football (helmets etc.) must make a difference. Basically, in rugby players tend to tackle low and wrap their arms around the opponent. In football you see players tackle high and more emphasys on a hard hit. But, you see a lot of football players bounce around and keep going after getting hit, you'd think a low tackle as is more common in rugby would be more effective to stop the ballcarrier.