Sounds reasonable but i wonder how may boats are soda blasted at high cost every ten to twenty years. After soda blasting comes two or more two part barrier coats then bottom paint that must be applied in a norrow hot coat time frame. Should ablative paint ablate away fast enough to prevent build up?
Ablative paint can ablate enough to prevent buildup, the problem is boats which are only on the water for six months and then get a full coat each year, are likely to accumulate paint buildup...
til flaking sets in. You can see this effect right along the waterline where the paint does not ablate very much.
You can battle this situation by painting the bottom only when a base coat shows, or at least try skipping alternate years.
If you strip your bottom, I would not remove a barrier coat that is in good condition. If you strip a barrier coat you may open up any repaired areas under the bottom coat, requiring you to re-do the repairs. I had this experience on a 36' boat whose barrier coat covered an extensive blister repair. Blasting the barrier off opened the edges of all the blister repairs, requiring re-filling them and extensive sanding. Don't disturb a working barrier coat.