I worked my Smokette like a "borrowed mule" for six years in a salt storm,on the beach in south Fl.
I used most of the approaches above.
Greased Lightning works well.
I'd cook thirty pounds of product,3-5 days a week.
Yep,you'll find some ruboff.
Does that affect anything?
I haven't found it.
This is not a Teflon skillet.
It's A SMOKER.
Gave mine to my boys,who are cattle ranchers.
They work it like a "borrowed mule".
Same racks.
Clean it up a little,spray it with some Pam, and go cook something.
This is not a paid endorsement from the company,since they are happy I'm not abrasive.{Sometimes}
Worry less about the cosmetics,after awhile,you'll agree.
Have fun & enjoy.