Outboard motor oil.. YamaLube vs..?

[michauxii]

I run a 150HP VMax Yamaha on my bay boat.
Always used YamaLube oil.

Getting ready to make the 500 mile drive down to fish Venice.

Called my local (and only) dealer in my area to see if he is in stock.
Nope! Won't have any for a week or so.

What is my next best option? QuickSilver??

Final question..
I'm guessing my system uses roughly 3 ounces of oil per gallon of fuel burned. Right??