wonder how well a 4 stroke would have coped???
I used to do a lot of Trail riding . One day i was out with a load of mates and we drowned 3 bikes in a river , right under .
Mine a 2 stroke the other 2 were 4 strokes .
We drained the carbs on all the bikes , lifted them up to empty the exhausts and the 4 strokes fired up after a few spins .
My 2 stroke had to have the plug removed and spun over (bumped in gear ) for ages to empty the crankcase . It needed 2 furthar plug cleans before it started . Later that same day it siezed solid and a mechanic told me it was due to the main bearings being washed out and then starved of oil while pumping out the water and re starting it.
I was surprised at the 4 strokes but when you think about it a 4 stroke can only take water above the piston , so draining the water from the carb is all it needs .
The two stroke fills the crankcase and cant easily get rid of the water , if its salt water it must be worse .
have also seen both go under revving hard and thats a major rebuild job .