I recently took the boat from PP to Siem Reap and it did stop to pick up people from Kompomg Chhnang. You do have to be taken out into the middle of the river, where the boat will slow down and pick you up. I forget the name of the operator but I can check if you like? It wasn't cheap though at $35, obviously less from Komong Chhnang.
#3 Ruthyp has been a member since 5/12/2008. Posts: 7