When fishing on the Columbia River or Willamette River for Sturgeon in the winter,
I have found they bite very soft in the winter, That is why when I fish for them I use a lighter fishing pole.
Fist of all make sure you have a nice sharp hook. This will be most helpful. Once you get a bite, pick up your fishing pole slowly don’t rip it out of the rod holder, hold your fishing pole down low to the water, as you feel the fish bite 3 or 4 times in a row give your fishing rod a good yank straight back, after you do that wait a second or two and see if you feel the Sturgeon on, If not drop your line back down to the bottom, Because most of the time fish will come back and bite the hook again.
I hope these tips, will help you all have a sucessful day of Sturgeon fishing!!!