I found a way to make my spinnerbaits hold up better, without having to resort to titanium wire.
I bend my spinnerbait wire closed at the R bend to get a 60 degree+- angle, instead of 90 degrees. I use #6 Indiana blades on the back, with smaller Colorado blades on the clevis, and they keep the blade up so I can fish them at lower speeds. That way, I can use the 60 degree bend and keep the blades closer to the hook and trailer, which I think makes for better hookups.
Then I lock the spinnerbait body in my fly tying vise, so I can work on it more easily.
I use 28 gauge gardening wire to close and reinforce the bend, putting three or four wraps around the blade wire, then four loop wraps around the back of the R bend, and finally another three or four wraps around the wire leading to the head. I reinforce and lock the wire in place with crazy glue, being careful not to let it run down either wire too far. I can fish the same spinnerbait for 20 fish or more without having the wire open up or break.
I also put a bead right up against the loop at the end of the blade wire, and lock it in place with crazy glue, to keep the split ring for the swivel from accidentally slipping through any opening in my wire loop.
This whole process adds five minutes to my building time, but it avoids the frustration of having a spinnerbait open up or break on a fish, and of bringing a spinnerbait back to the boat with the rear swivel and blade gone.