Hello SaltyDog,
There are two systems in order to sail back with water jets, the traditional or older way, using backing deflectors, buckets, along with the pivoting flaps for turning, like used in ShipSim2008 even for ships that did have the other system.
In the second method, the spin axes, the hinges of these buckets are no longer attached to moving parts, but the to the hull (indirectly, of course).
The Hamiltonjet website not only has enough information about it, but also a small game to show how it's going to be with those jets and their deflectors, sometimes called "scoops". In this system, forward or backward, the rudder remains in the same position to turn in the same direction, CW or CCW. When I try to explain in greater details, it seems I make things fuzzier than they are.... The difference is of course the direction of the water flow versus the pivot point of the hull.
http://www.hamjet.co.nz/jetboat_game
Have fun with these jets,
Luc