seriously.... 2 maybe 3 at the most is all the oil changes you need...after your first oil change and you run the machine for a few minutes (20 minutes ish), the oil and water will homogenize into a milky solution unless its permited to sit for a few days the water will stay suspended in the oil... the next oil change will remove quite a lot of oil and water held in a solution and after that evaporation will take care of the rest as soon as the engine heats up... you can tell if its evaporatiing if you take a look at the crank case vent that runs into the airbox...
I have swamped my machine *badly* quite a few times... I use a paste that gas stations use to test for water in the fuel, if there is any water present it turns purple,,, I put a blob on the dip stick and I ride around in circles for about 3 or 4 minutes and pull out the dip stick... its never turned purple...
seriously, 4 or 5 oil changes... I hate to say this out loud, but get a grip.. if you have never sent your machine swimming, you have no idea how to deal with it...and clearly... you have never sent your machine swimming.
the last time I sunk my machine (sunday last week), I had to leave it over night, the water was just about as high as the snorkle, the seat was under water... the next morning we pulled it out, I only had 1 filter, and enough oil for a single oil change, I drained the carb, cleaned the airbox, and drained the oil... we did lift up the front bumper and bounce the machine around a bit to make sure we got all the water out...I put in a new filter, added the oil drove out in a cloud of steam, and by the time we got back to the truck it was all good...
quite honestly, I agree with skip1, if you can get the engine started after swamping the machine... your more then likley good to go... make sure the airbox is emptied before your try running the machine, start it up, idle for a minute or two and check the oil...if its not milky, dont worry about it too much, end your riding day till you can change your oil but dont stress... if your airbox wasnt full of water, whilst your engine was running, realy dont wory about it,... ask yourself this... if the oil doesnt leak out... where is the water gonna get in ? 4 or 5 oil changes... jeez... Im gonna buy some shares in the atv oil business...