Mine is missing the guide.

More practice in the dark is in order I think. Thanks for the replies.
I have an FR, which I believe is the precursor to the Yankee. (Actually I've heard it's exactly the same tank; when FR slipped away Yankee took over much of their lines. I don't know that for certain.)
Frankly, I think
I would have a tough time loading it without the guide, especially if trying to do it in a changing bag. (I have a blacked out room and load film on a table top in the dark.) But honestly, I don't even really use the tank very much.
What I use (way *NOT* cheap) is a Phototherm sheet film insert. I bought it for my Phototherm, but Phototherms use Patterson reels. Ergo it's an exact fit in a Patterson 3 reel tank. Works flawlessly. Gives you four sheets in a Patterson tank, and way better than the taco method in my mind.
But again, it's not cheap. The insert is $130 for a plastic doohickey. The high cost is from vanishingly low sales volume. (Kind of like film!)
Here's a couple of links with pics and some discussion:
Here:
(there was a url link here which no longer exists)
And over at photo.net:
http://photo.net/large-format-photography-forum/00RMar
If you do want to use the Yankee without the guide, then I'd suggest you load every other slot as someone else offered. Maybe if you've got steadier hands than me, and you got used to it, then you could load every slot. But I also think they show up on evilBay frequently enough you can probably find one cheap.