Fichy is correct about last years poor run of fish. Frankly most don't expect this year to be much better.
That said if you never had a fresh King on the line even a poor season can be the best you ever had.
The place has always been overhyped with number expectations IMHO.
Have your spool full or a lot of backing on the fly line.
Not a bad idea to carry an extra spool with you.
If they turn and run on ya its a long distance battle tripping over rocks just to keep up.
Just don't read some of the reports and think your gonna fill a pickup truck with Kings.
There is a learning curve.
Watch those near you and don't be afraid to ask for tips from others-sometimes subtle things in your setup can make or break a trip.
Yes- egg sacs are just fine generally throughout the year for all species. Just remember ya don't have to use a #1 hook. Smaller is generally better IMHO.
Dont think I ever saw anyone using skein. Sacs can be purchased anywhere up there.
Have plenty of extra hooks and leader and weights and sacs as the rocky bottom eats rigs.
Rubber bottom boots are a sure way to get wet. Felt at the least and studded corkers are best.
The bottom is rocky and quite slippery.
Wait to get your tackle up there as the shops carry all you will need specific to the SR -generally at competitive prices.
I have never found a local shop in my area that has 'the right stuff'.
Oh yea- be sure and double check the DSR specific rules for gear setup and fish limits- they are usually different than the state regs.
Also reserve the permits EARLY as they limit the number of fishermen on their property and can sell out during the season.