My contribution is not related to charity, but they were auctions (ebay).
When we moved to the East Coast, I spent over a year looking for a replacement boat, as we had sold ours when leaving California. Every day online - Yachtworld, sailboatlistings, ebay, everything. Looked at dozens of boats in person. Many phone calls. Finally found her....long story.
2 of the boats I inspected in person were auction boats. Both were grossly misrepresented. So much so that the ads had fooled me into being interested.
The first was a Bristol 28, a rare boat with nice lines and an interesting mix of racing design and cruising features. The picture looked fabulous, nice clean white hull with tan canvas and wood trim. The minimum was $8,000. I drove 70 miles to see it and meet the owner. Found the boat in its slip, with cracked and soft decks, miserably cracked and stained gelcoat, significant fiberglass damage on the port beam that had been mudded over with bondo or something, holes drilled in the deck for some tinkertoy from the past, and never filled. There were neglect signs, such as lines hanging in the water and covered in moss. The minimum should have been $800. I called the owner, who was in transit, and told her to make a U-turn.
The 2nd boat was a Catalina 27, 1987. Diesel. Ebay auction. Not a model on my want list but at the time it was very cheap and there was no minimum. I'd live with it for awhile and sell it at a profit (uh-huh). Found the boat in a yard, keel had cracks all around, with rust seeping. Not just the Catalina Smile, but a seriously dubious keel joint. Also had filler in spots where an amateur had attempted a repair. Rest of the boat had that look of a decade + of neglect. I later saw the price rocket and it sold for $5,400 - I'm guessing sight-unseen.
Ask for recent pictures, surveys, etc. Never buy unseen, even if they pay you to come and get it.