I definitely think hets count as one and visuals count as 2 with regards to recessives. Just the same as we view all of the Incomplete Dom. genes.
And for those who say they don't count hets, when you price an animal for sale do you include that het. gene in your price? You aren't going to sell a Spider het. Albino for the same price as a single gene Spider right? So you are really counting it.
I'm with C&H on this one, even though it just comes down to semantics. Technically, they're all multi-gene animals, just some of those genes are ones we've decided are valuable, and the others are "just normal".