Didn't want to hijack the "Tritoon vs. Pontoon" thread, so bringing it back here.
While I was talking to the guy who is doing the pontoon repairs, we got to talking about electrolysis and I told him my story. He mentioned that "stray current in the water" is becoming much more recognized as a problem in the boating world. He mentioned about how many people are dying from this, and how marinas are finally starting to take notice of this, and are beginning to test their slips - some of them on a daily basis. He mentioned Electric Shock Drowning (ESD). When I got home I looked it up. It's become such an issue that they now have their own Association:
http://www.electricshockdrowning.org/
Here's another link from BoatUS. What's important is to read the sidebar:
http://www.boatus.com/seaworthy/magazine/2013/july/electric-shock-drowning-explained.asp
OK, so end of the PSA. Now on to the pontoons...
As I mentioned in the other post, he's pretty confident that all of the holes are small enough that they can be easily welded - just don't know how many there are exactly yet. He's going to pressure test each compartment of each pontoon, mark them, and then weld them.
I told him about the slow leak that I had on the port pontoon. It turns out that after we soda blasted the boat, I noticed a very slow leak. It was literally about 10 drops per minute. I tasted the water and it was salt water. I had not had the boat in the water for approximately 1 month before I had it soda blasted, so the water was inside the pontoon for at least that long. When I picked up the boat from the soda blasting, I noticed a small puddle of water under the port pontoon. I thought it was a result of the soda blasting, since it uses water in the process. Didn't give it a second thought, and drove the boat back to the storage lot (about a 40 mile drive). The next morning I went to the lot, and noticed another small puddle under the same port pontoon. Now I'm wondering "WTH is this all about?" and brought it home. Sure enough, there was a very slow leak somewhere along the keel of the port pontoon. Since it was on the trailer, I couldn't see it. ANYWAYS..... he believes it's a small hole that was probably opened up as a result of the soda blasting. It's got to be small, since it literally drained for over a week. I know that when I brought the boat back in when I was out the last time, I didn't notice any handling problems or listing, so I don't think there was too much water in the pontoon to begin with, so the hole is most likely pretty small.
I next asked him about some of the pitting, and whether or not we could sand them smooth. He recommended against removing any metal. Better off to simply put down a coat or two of barrier epoxy. He was initially going to put down marine bottom paint specifically formulated for pontoon boats (I believe it's called PontoonPro) but I told him I'm not EVER going to wet slip it again, we decided against that. By doing it that way, loading and unloading the boat on the trailer won't mess up the EXPENSIVE bottom-paint job, and besides unless the boat was going to be in the water for two weeks or so, the marine bottom paint wouldn't be needed, since I'm trailering the boat. In addition to helping hide the multitude of cosmetic sins that are on the toons, it will also add an additional protective hard surface to the pontoons themselves. I'm a little bummed that it will have the "black bottom paint look" again, but knowing what I know now I'm SO glad I did that soda blasting job now and discovered this problem. I can't imagine had I not discovered it and suddenly started taking on water 15 miles offshore! Better that I know about it now. Since we're going to epoxy it, I told him to put 3 coats on. He thought that was a little overkill, but since I'm going to be loading it and unloading it off a trailer, there's going to be some wear that a boat only kept in a wet slip would not encounter. It's a lot cheaper to have him add a 3rd coat now than to come back a year from now and do it again.
Since the pontoons are soda blasted now, he's also going to buff the toons to put a shine back to them, then apply the Sharkhide. He wanted to talk with Clint about some metallurgy stuff (can it go directly from "white metal"-to-buff-to-Sharkhide, or something like that), so he put a call in to him while I was there but got his VM. Anyways, he'll be able to do a much more thorough job having the boat up on stands than I could crawling around under the trailer, so the extra money is well worth it to me. My back will appreciate it.
Blondie is happy with this solution as well, although she is a little bummed that she's not getting her ellipticals back (still in shock about that!).
It'll be 3 weeks before he can get to it, but I was happy to leave the boat with him.
This psychological roller coaster ride that I've been on the past week has really driven me nuts! Hopefully we've got this whole thing finally figured out and can get back on track again.