I don't know -- perhaps it would work, but these trees are so common in the trade (and for humid areas, a bad choice) that it seems like a waste of time.

I'm not sure about spruce BUT the float test doesn't work for everything. Taxodium for example. Viable seed can float because they're covered in resin that makes them more buoyant for other things (oak maple pine) its helpful.

Well I have some sinkers I guess I will just roll with it

Thanks for the input