OK, I've decided I'm going to try some deep spinnerbaiting.

I've got two lakes I fish routinely.  On one the "deep" structure drop offs and rock piles are only 10-12 ft. deep.  The other lake is more clear and the drops and outside weed edge can be 20 ft deep.  What weight spinnerbait would you use for the 10-12 ft. depths?  For fishing down to 20 ft depths?  

There are some variables to this... first and foremost is speed of retrieve.  You can slow roll a 1/2 oz bait in 10'-12' easily.  But if say you speed the same bait up it would likely climb to a mere 1/3 the depth it had been slow rolled at.  Anyway, add length of cast, line diameter and you get lots of possibilities.  Unfortunately, the only accurate way to find out is to buy a couple and fish them.  I carry a few Ledgebusters in 1, 1.5, 2 and 2.5 oz., to cover all my needs.

I fish the 3/4 oz Ledgebuster Single Willow Bade...It's THE BOMB!

Well, I'd probably opt for a different bait if I had to go slow, so I'm thinking moderate retrieve.  I suspect a 1 to 1.5 oz. weight will allow a moderate retrieve at the 10-12 ft. depth and maybe a slow retrieve deeper.  I'm thinking of this is a starting point to experiment with.  Sound about right to those of you who have experience with deep spinnerbaits?  

Sounds good, but for a moderate retrieve I would probably try the 1 or 1.5oz with a double willow or one big willow blade.

...and one other thing, don't forget a trailer hook!!!!!