Realdeal,
Al seems to me to be very knowledgeable and sincerely tries to help. He is also obviously generous with both his time and his knowledge. Whether you considered his responses to be helpful a courteous "thank you" for his taking time to try to help was a more proper reply.
I think too that as some others have said, no one seems to have tried what you are considering so it sounds like you'll have to conduct your own experiment.
Cheers
Al seems to me to be very knowledgeable and sincerely tries to help. He is also obviously generous with both his time and his knowledge. Whether you considered his responses to be helpful a courteous "thank you" for his taking time to try to help was a more proper reply.
I think too that as some others have said, no one seems to have tried what you are considering so it sounds like you'll have to conduct your own experiment.
Cheers