The hurricane fence idea occurred to me too. How much does that stuff cost? I believe I have about 140 feet frontage.
I also have two walnut trees on my property. Talk about a pain in the a$$.
I think between the cheap posts and two 50 foot rolls of the green fence I spent in the neighborhood of 60-80 dollars. I just zip tied the fence to the posts (I have thousands of zip ties laying around). I just roll it up and re-use it every year in the fall. I’ve gotten pretty good at timing it (I watch for the wind to shift from out of the northeast to out of the west mainly) - of course you would have to judge what wind direction causes you the most grief and place it when you see trouble on the horizon (you probably have a good idea about that already).
IIRC, I am covering about 60 feet with what I have purchased and I have extra posts and 40 feet of extra fence hanging around.
Some leaves still get through, but the work is minimal compared to what it used to be (mostly just mow them up with a push mower and dump them into the bin) or I dump them into a pile and shred them through a blower/vac/mulcher if I have more than will fit in my 90 gallon bin for one week.
In my case I would’ve easily paid 4 times what I did to deal with this recurring problem because of all my hip/spine issues, so YMMV. In the end, after just one year you may find it pays enough dividends in time spent alone that it is worth it - I know I did. I got everything I used at FleetFarm.