Biggest that I have used is 3/4 oz.  I primarily use war eagle and use them on the big rivers which have 10 ft+ depths.  I have caught some nice smallies using them.  
 

Only issue I have with them is with the hidden weight style 3/4 oz spinnerbaits .  The hidden weight style makes the collar bigger and it’s a pain trying to find a trailer that won’t split down the middle 

A 6" or 8" grub will take a 3/8-oz spinnerbait or chatterbait to the bottom fairly quickly. Most of my experience with these combos has been limited to depths of less than 20' or so during the past 30 years.

 

www.tackledirect.com/sea-striker-got-cha-6-8-inch-curltail-grubs.html

Safety pin style spinner baits by design want to plane when retrieved depending on the type of blade or blades. The only way to keep the safety ping design deep is slow retrieve and weight.

The old twin spin (double arm) design is designed to be retrieved deep and the blades flutter on the fall creating strikes. I fish 5/8 oz twin spins with size 1 or 2 Colorado blades 1’ to 40’ deep very effectively and doesn’t roll over snagging when stopped.

Tom

 

I've been using 3/4 - 1 oz. spinnerbaits for years. I use them mostly during the winter months but I also use them at night when I want to fish grass beds in 10-15' of water.

 

Also, I always carry rubber core sinkers to increase the weight on 3/8 and 1/2 oz. spinnerbaits. I attach the sinker to the hook shank or the lower arm of the spinnerbait.

1 hour ago, WRB said:

The old twin spin (double arm) design is designed to be retrieved deep and the blades flutter on the fall creating strikes. I fish 5/8 oz twin spins with size 1 or 2 Colorado blades 1’ to 40’ deep very effectively and doesn’t roll over snagging when stopped.

Tom

 

 

   @WRB I remember the thread on twin-spins from earlier. I remember that many of the people who responded said that the twin-spin models they used would twist to the side upon retrieve. I gathered at the time that twin-spin models were usually meant for vertical presentation and not horizontal presentation.

 

   I think I still have the pics you sent me of the twin-spin attachment that you made for jigs. Is that the twin-spin you're talking about when you say that it "doesn't roll over"? Or is there some other twin-spin that doesn't roll over?

 

   Sorry about the confusion, Tom.        jj

The twin spin I use has spreader wire with a clevis to attach a football jig that swings freely. The blades are attached with swivel clip allowing them to spin in lieu of rotate around a wire shaft. 

The single willow blade Ledgeburner safety pin style uses the same swivel clip blade the spins allowing it to be retrieved slowly deep.

Tom