I am growing oyster mushrooms and would like to experiment with smoking them also drying them.
Has anyone had any success with this ?
Yes, the dehydrator is for the purpose of drying food. I have dried hundreds of pounds of mushrooms, not to mention fruit as well as "raw" dishes.
For oysters I generally leave them whole unless the are really big (thicker than about 1/4 inch) then I slice them before drying.
A fan doesn't work all that well, although I have dried mushrooms over a heater vent when the dehydrators were full. The benefit of a good dehydrator is that you have a controlled environment with a thermostat and even drying.