In Cambodia, there is a great fishing method that doesn't require you to spend hours keeping an eye on your fishing rod or nets. First of all, see how locals do it to learn from them. If you would like to try on your own, make sure to check the hole once in a while to make sure the fish is there and is still alive. Once you collect your catch, make sure to fill in the hole so it doesn't remain active with no reason.
Deep hole fishing traditionally coincides with the dry season, namely October through April. It happens so due to the fact that during the dry season deep pools serve as refuges for some fish species. There is a number of deep pools around the Mekong river flow in Kratie and Stung Treng Provinces.