A great day of fishing is all relative to who you are and your expectations. Some people think that 1 fish makes a great day and others it has to be over 100. We talk to a lot of folks that can't catch a thing so we have what we call a charity day and just teach. It's pretty easy to see who needs help most of the time and most are too proud to ask for help so we offer. We set up their rods with the right stuff and explain what they need to do. Many of the folks we help catch their first fish in Alaska and they may have been there for 2 weeks already.
So for me a great day is relative to what we decide to do, but 100+ days are always good.
We are mostly C&R but will keep a bleeder if allowed
Chums - 50+ per tide
Pinks - ??? just catch till you're tired
silvers - we use 5wts so we loose most so 20+ hookups
socks - I don't floss/snag so we don't do socks
kings - I don't fish kings in AK but here in Oregon it will be 20-50 a day this weekend
dollies - 100 - 300 a day depending on where were at
rainbows - 20 - 100+ a day depending on where we are
Give examples of what you consider a great day.