not to be a stickler but with that setup you were most likely long lining (fancy fly lingo for flossing) your fish, this is very easy to do with a fly line if fished right in the fishes face which is what the split shot would most likely put you in.
did you tag bottom at all during your time fishing ? If so then im correct with my assumptions, I only assume this because you were basically nymph fishing with a sunk tip on and i have tried this and it isnt ideal.
When im swinging flies for salmon i dont hit bottom ever because i keep switching stuff until i find the sweet spot cruising just above the fish so they must commit to the take, I catch less fish but i dont foul hook very many if any at all. I fished the Vedder sunday for a couple hours and hooked around a dozen fish and all were fair hooked, a dozen in 2 hours is pretty good and thats not counting the ones i hooked and lost during battle. I thankfully have done enough river fishing that i can usually find the sweet zone on my first or second changeup, sunday i was spot on with the first setup