I dont think they go upwind either…
Sticks in the same spot maybe, rides a bit to the side yes with the "boardsail"
I would be happy with light gear, and never put "extra" weight on mine just for the sake of having it tilt down.
The reason we struggle getting to our board, is much more likely because we are all spoiled when we foil a lot, or mostly, we get so bad at bodydragging upwind, because we rarely have to when the board dolphins downwind most often.
Till now, big wings and light good gear can float and "sail" indeed.
Without the board you can go quite well upwind, here is a track I made, reposting, when out on a TT with a 10 m2 (more powered, but still) to see how I could go upwind or not, just bodydragging in the water:
Of course in lighter wind you can not go as steep upwind, but I think we can get to our boards.
Not sure of course, if some go A LOT more upwind than others…
In marginal winds where we might not be able to bodydrag as well, there is no issue in this respect, as the boards usually tip down anyways now, no wind to keep it floating.