Barry, I had the same staining on the deck while rigging the Blue and Helena. About the only way I can see to avoid it entirely is to glue the rigging to the deck from the bottom of the deck platform. If one thinks far enough ahead, it would be possible to figure out where the attachment points are located on the deck, and attach lengths of thread to the deck gluing them on the bottom side of the deck platform (threaded through appropriately positioned pin holes, of course) before gluing the deck in place. I did that with the Maly Cutty Sark I was working on before the house ate it (quite literally....it fell off behind the book shelf it was sitting on between build sessions, and I've never gotten the internal fortitude to spend the day or two labor to dismantle the shelving to get to it). In fact, I went so far as to put on the lines in "pairs", with the "pair" actually being one long string, so there was no detachable end beneath the deck structure...all real attachments were to the masts and spars. It was working well, but were a pain to work around while attaching the various pieces of deck equipment in place. The other thought I've had is to leave putting on the hull side skins until last, so the underside of the deck is accessible when rigging the ship. However, my guess is this would work best if one had at least one extra hand....ever wished you were a Barsoomian? That would make it a lot easier to tighten the lines while attaching them. Speaking of the "free" 3D cad program....I wonder how much the "small fee" will be to make it functional when not connected to the internet, and whether that will remove the adware feature? Sorry to hijack your thread....looking forward to your next installment.