I sent him an email asking if the sails have camber inducers in them, and I hope to get a response.

Thank you so much for telling me that i will still be able to plane in 20-30cm of chop. That is reassuring. The type of chop that we have on Whiskeytown Lake is disorganized and lumpy. Very rarely are there straight lines.

When you talk about 20-30cm of chop, is that because you think that I will need winds between 20-30knots to use this board? Or 20-30 knots to get on plane, controllably?

I think that no matter what rig I get, that I am learning a lot, and I plan to practice at uphauling first, and then progressing to water-starting. I do not know enough about water starts or beach starts to be able to hold an intelligent conversation on those topics.

@Decrepit thank you. Knowing that I can plane in 15-30kt winds is a big plus. I was concerned about trying to learn in moderate to high winds, for some of the reasons you just mentioned.

The seller just responded to my email: "I did not know sails were designed for specific boards and I do not know any models of sails. I do not know what camber inducers are; as I said, I was self-taught and never sailed that much. I would guess no camber inducers as I do not think they were available in the 90s."
Thoughts?

I had a 4m Gaastra from that era my uncle gave as Christmas present. I was so excited as thought it be great as had the US111 on so assume was Pete Cabrinha. Anyway this had small plastic cams. They could be rigged without but the luff tube was huge, must have been 200-250mm wide. Thi filled with so much water that made it almost impossible to uphaul. I was only in stages of just in straps and would have only been 12-13 but I remember found a newer 5.8 so much easier to up haul than the 4.0m

A Mistral Superlight in good condition is one of the better choices among vintage boards. Shame that it's waterlogged. However, if it's missing the springy fin or mast foot, they can be expensive to remedy or source.

Yeah, I've seen too many adverts of boards that have been out in the sun for 15 yrs and somehow the owner thinks it's worth something. As much as I hate FB in general, there seem to be less crappy boards listed in the windsurfing for sale groups. FB Marketplace, however, is as bad as CL and eBay generally are. You may want to also visit the beaches where real windsurfers are and strike up conversations. A lot of us have gear in the garage that we'd happily let go to someone on the cheap or know where the better used stuff is. Plus, real windsurfers have a vested interest in you learning rather than seeing you as a sucker to foist bad gear on. Some of the harshest comments about used gear is on those windsurfing groups I mentioned above where people will call out the poster for over priced or crappy gear.

Good luck!

I actually got a contact from another fellow looking to give away some windsurfiung equipment that he says is on some property he owns that is "extremely hard to access in the Sierra Nevada Mountains" I'm not sure what this entails, but it sounds like an adventure.

He gave me two boards, and a bunch of sails and other gear I haven't even unpacked yet.
Board #1: Unknown BIC Board, but based on pictures from several websites, I believe it to be one of these: Mabye a BIC BEBOP (1986-89) with 377 cm x 68 cm, but 20 kilos and 230 liters, maybe a BIC Bamba (1989-1993?) 240 liters and 370 x 65 cm, or maybe a BIC Samba 320 (early 90's) 320x64 cm 170 liters.
Board #2: An extremely light and thin board with no daggerboard, that says only "Designed By Chuck Simms Delta Speed".
Mast #1: Steel or aluminum.
Mast #2: Looks like it goes with the Delta Speed board-----looks like it is made of carbon fiber.

I got the info on BIC boards from this website: joewindsurfer.blogspot.com/2017/07/bic-windsurf-boards.html