Have you taken into account at high speeds, to explain to the novice, what happens to back pressure as it seems there would be little or none. Common sense seems to be the prop and water prop wash would suck the exhaust from the engine. Is that not the case? What happens to your carb sync in that case and does it change sync tuning.from sitting still in water? Also, it has been suggested to tape prop exhaust to dulpicate back pressure while on ears. Is that an alternative? Thanks
