With a LH prop the boat pulls to stbd. in reverse.
Boats to your right have the right of way and need to be seen better. So helms are usually on the stbd side.
When landing on the stbd side as you reverse to stop the propwalk pulls your stern nicely.
Most engines are CCW rotating and most gearboxes reverse rotational direction to CW in fwd gear ... CCW in reverse and that produces prop walk to the port side in reverse. Not as described as ideal above. Most modern gears have 2 shafts and 2 sets of gears but the very popular Brog Warner Velvet Drive planetary drive gears rotate their output shaft the same way as the input shaft. Skippers w modern 2 shaft gears will prefer landing on the port side so reversing dosn't leave the stern hanging out away from the float, however the helm is still usually on the stbd side so they haven't got an optimal view of vessels approaching that have the right of way. Hope I got all those directions right.
jeffnick,
Yes
Honey,
Most of those commercial boats are probably quite old and have BWVD gears. Like my Willy. Preferred. But if you have a RH prop and your'e more concerned about graceful landings than legal matters and have a port helm you would consider the RH prop and port helm preferable.