Hi José,
We're still in the midst of writing the Haskins Pediatric Paper. You can checkout the
poster here. But I'm happy to answer your questions about it.
-minpatch does go down to 5. But, as noted in the documentation, it's hard to optimize a search problem on that scale for multiple processors. I did play around with other options when making the Haskins Template, and don't see much benefit in going to smaller patch sizes. The nonlinear templates are already incredibly crisp.
What age group are you targeting with your template?
-Peter