Lots of great information has been given on this post.
This is why I posted this question about 1/2 ton towable with a Silverado 1500 HD. True life experiences are the best.
After reading all information and comments....I do believe the best idea for our situation is to upgrade the pickup first. Then we will not have slim pickings on options.
One more silly question....I see the wording "OP" used. What does "OP" reference. I know I will bang my forehead when I see the answer.
I do hope this thread continues with others who have an opinion. This is how we gain our information.