There is always a "fight" going on somewhere. Go find it.
Not always. Especially when you fly at non-peak times with low player numbers, there are often big inbalances and very one-sided fights. Sometimes 2 countries dogpile on the 3rd one... and i'm not keen on being one of 12 greens chasing that poor lone red one
I'm looking for interesting battles - I like to defend and I prefer the red darbar being bigger than the green one. If those conditions aren't met, I consider a short time hop over the fence.
And If you fly in EW arena.. very often (or better: almost always) the numbers are distributed like 12-3-0. Switching is almost mandatory for me then. In that case the 1 hour limit is even too long for me, because very very often when I switch to a completely outnumbered (in EW that means: 0) side, the "horde" stops their attack immediately and go to attack that other country. And I'm stuck, they are capturing bases unopposed on the other side, no battle in the whole arena at all.