Visit the Team Iceshanty Proshop
i would not wait 10 years to try for those planted fish. walleye grow quite fast. by two years old they can be 10 to 14 inches so three year old fish are usually over the legal size...
With the cold water and shorter "growing season" and sub par food sources a 7-8 year old walleye would be most likley in the 2lb range.. So in short it will be a good 10-12 years before most lakes have "decent" walleye fishing...
They will get to legal size in about 3 years if there is a decent forage base.
And yes, a 15" walleye IS a "decent" fish to me.