I don't think it matters how many players you add to the mix. The fact is that if you send the same amount each time its bound to get shut down. Besides I also send money to a person C for other things I need to owe in the past but I am not getting money from person C in return.

A>B>C>A is not the holy grail but of course it helps bring less attention I guess... but Amazon will still know if Person A is always sending to B and B to C and C to A especially if all 3 accounts send are always sending the same amounts. There still is a pattern established there and that is what Amazon looks for. People can still get shut down. What I do is I space out the times I send and withdraw the money from my account. I don't necessarily need my money back that badly and I know I have a month to do 1K. I have a spreadsheet to keep track of the amounts I make between mainly person A and B and an optional C sometimes just for me.