I would not use single pole switches at all. While there may be a way to hook them up, it is too simple to foul things up.
With a DPDT switch, the DC + and - wires go to the , and the two wires to the turnout go to the two center contacts. The two ends are hooked together with a criss-cross, or X.
When you test, if the turnout goes the wrong way when you hit the switch, you can reverse the wires at the turnout, or at the center contacts of the switch. If it would be easier, you can buss all the + sides together, and all the - sides together from the DC supply. I run my DC supply at 14 volts. Since it is just a momentary connection, it provides enough energy to move the turnout quickly.
Although it is not too helpful, I can post pictures if you want.