I'm knew, I just got a AQ MC Cat and I was told it needed a rear motor brace if you keep the tub, But I saw a boat with the tub cut out so everything was moved to the bottom of the boat so it need a full motor brace which I ordered. Now I will be racing of course on 4s and then playing on either 5 or 6s. Do I need the rear motor ring/mount for the UL-19? Should I go for the full mount? No need to worry about it. Just want to make sure I have a full list when I put in my order with OSE.