Do you actually “cast” those heavy saltwater reels? I imagine it’s awfully straining.
Those old school Penn Beachmasters, Surfmasters & Jigmasters were called “thumb burners” for a reason

Back in the day there was a bowl or box of thumb pads at the checkout of every tackle shop. Elastic on one side, leather on the other.
I was given the Penn 200M Surfmaster in 1969.
It’s still going strong. 3:1 ratio makes it less than stellar for plugging.
Casting it is an adventure every single time.
Just right and the mono would fluff up, a brush of the thumb would tame that then you’d really have to watch and put the brake on before the payload hit the water.
The 4/0 Senators were a staple on the NE fishing scene. From bottom fishing to trolling with monel wire. Now *that* was an expensive backlash.
A top tip for backlash removal.
Right after it happens, before you do anything else, tighten the drag down & clamp your thumb down on the spool hard. Give the handle 3-4 cranks with your thumb applying pressure.
Then try stripping line off to see if it comes out.
It usually works in two or three tries.
And if it doesn’t work outright it usually at least makes picking the mess out easier.
Tight lines!