It's a trailer and your stopping/slowing dead weight....I think most of the weight would be distributed between the 2 axles,But in a boat trailer the rear of the boat with engine,out drive together would be where the most weight is and should stop better? Am I right on this??
Even on a triple axle trailers I have seen the brakes are on the 2 rear wheels.
Both my 79? and 85? tandems have no brakes.