You get same for defending, more for success on attacking random than friends (by quite a bit)
Best if you and friends both play often and use nerds on each other daily (and defend) for 20 elixer and 5g per defend.
So if your friends are 'nice' enough to attack you, attack them back. Use rest on randoms.
Failing that everyone should spend 1 nerd per attack at max rate, on randoms and everyone defend.
I forget how much g you get for a defend 5, I think, but send out 70 nerds at 1 a pop, if all defend you still get 350g for that 2hr collect of nerds (3 castles at lvl 9+) at worst, better if you succeed at some of them.
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Best if you and friends both play often and use nerds on each other daily (and defend) for 20 elixer and 5g per defend.
So if your friends are 'nice' enough to attack you, attack them back. Use rest on randoms.
Failing that everyone should spend 1 nerd per attack at max rate, on randoms and everyone defend.
I forget how much g you get for a defend 5, I think, but send out 70 nerds at 1 a pop, if all defend you still get 350g for that 2hr collect of nerds (3 castles at lvl 9+) at worst, better if you succeed at some of them.