Yes - there is a few different boats from PP to Chau Doc. At least there is one leaving around midday and that one takes about 4-5 hours. If you're not in a hurry I would suggest that you stay the night in Chau Doc. It's a nice town and you could explore it a little in the morning and then take a bus to Saigon.
#2 krisim has been a member since 20/7/2006. Posts: 36
The boat arrives late afternoon from PP. So, plan on a whole day from PP to Chau Doc, and probably an overnight Chao Doc. The Mai Linh Express bus to Saigon takes about 6 to 7 hours and goes via Can Tho. I've not personally been on the direct public bus but its about 110,000VNdong. I don't think they do an overnighter. But, I stand to be corrected.
In Chau Doc, the bus station to Saigon is at the eastern end of town (back towards Cambodia from the main ferry landing) and near the dry goods market.
There is/was a boat service from Chao Doc to Saigon (look here ).