I have two questions for those with some experience, related to routing of the chain on a marauder. With Quebec roads being in rough shape in general, I'm trying to prevent too much chain flop/slap without adding too much resistance.

1. I see that most use 1 idler pulley for the top or power side, do you think that 2 would be too much?

2. For the return side of the chain, some use derailleur idlers and some use a chain tube. Which do you favor? (at the moment I'm more on the chain tube side)

Thanks for your help.
Paul