Re: Alabama or umbrella rig.
I assume it is all up to what is comfortable to you. I do know they all range from almost no weight to about 2 oz in weight for a bare rig.
It seems a good weight to use would be around 1/2 oz. Figure this; a 1/2 oz rig tipped with say (3) 1/4 oz heads on the back would weight 1 1/4 oz. A 1/2 oz rig, tipped with (3) 1/8 oz heads on the back would be 7/8 oz. Now add the weight of the baits you might want to use. If grubs, you will be throwing about an oz lure all day on 1/8 heads. or about 1 1/2 oz bait all day using 1/4 oz heads on the back. Then comes heavier weight of swimbaits on the back. Also I have discovered a light or no weight rig will not get your baits down to the fish it seems. A rig that weighs in bare at say 1/2 oz, will start the sinking process and then you can hold your rod up or down to reach the depth you desire.
So far for me, all the testing I have done, and at my age, my comfort zone has been effective at a 1/2 oz rig, using 1/8 dart heads on the back and grubs for trailers baits. But then that is my comfort zone for this rig, using a three wire rig. But then I can not throw a 8" Hud all day either. It just wears me out.
I hope this helps in some way.
Oh and one more item and it may not apply. Don't try to make your rigs out of titanium wire, although it is good for spinnerbaits because it has flex and sprinyness and vibration. Once it is bent out to form your rigs, it will loose its strength and eventually break; I suggest staying with stainless steel wire for durablity, vibration and strength.