Wanted to close this question out. My Snake SFs showed up late last week and I had a chance to wrap one and see how the thread laid on its foot style. Pretty basic result that didn't seem to give me any trouble. Here's a few pix for reference:
Pretty standard stuff getting over the ramp and heading up the foot:
Closeup pix of the 2nd and 3rd locking wraps:
a G8t suggestion from G8trwood to use a piece of thread to pack the wraps in front of the guide. I used a piece of fly line backing that was close at hand:
Here's the final result:
The guide foot forms a little bit of a tunnel that you can see in the last pic but nothing you'd need to adjust your finish method to address. All in all, they wrap pretty much the same as a standard profile single footer.
BTW, that's white 'A' NOCP on a No. 3 Snake SF.