Sigh. No Bob - you just go right ahead.
Look - with all due respect, everyone here has basically told you one thing - it's not worth doing. But you seem pretty insistent on doing it anyway. So why do you keep coming and looking for affirmation?
Do you need it spelled out for you? It's not going to work.
The material is wrong - and not designed for prolonged submersion. The zipper is the wrong type. The seals are wrong, or shouldn't exist in the first place.
Yes, you could go diving in it, but you can also duct tape some garbage bags around yourself and go diving in those, too. There is no point in going through all this. If all you want to do is minimize water transfer, get a good fitting wetsuit. Wrapping yourself in a barrier is not only inefficient, it's going to add drag and be a royal pain to lug around on dive sites. Plus, getting out of the water could be difficult, depending on how much water you're lugging around with you, PLUS, you'll have to take the entire thing off in between dives.
I understand a proper drysuit is expensive, but, if I can use a different analogy here, you're trying to enter a 1979 Plymouth Volare into a NASCAR race. Yes, they're both cars. No, one will not be any good on a race track.
