I am in the process of completing the new floor in my workshop. The surface is wide plank t&g over osb, laid on PT2x4's on their sides over poly over concrete.Rigid insulation between the sleepers. I have stained with a wipe on base, and done the first coat of oil based poly (satin finish). I am seeing recommendations for at least 2 coats of poly, with suggestions for 3. At what point is the benefit of an extra coat of poly not worth it? Am I good to stop after 3 coats, or is there benefit in a floor to going on for more?

One related note- hand wiping off the stain on 750square feet of floor was a complete pita. Please don't tell me there was an easier way!

thanks

mike