The Azul template is your standard of single fins. The smaller sizes are good for 2+1 while using the larger 9" - 10" for single fins. Fuller area then the Rake template.
Fins size base
6.0 4.25"
6.5 4.5"
7.0 5.0"
7.5 5.0"
8.0 5.5"
9.0 5.75"
9.5 5.75"
10.0 6.25"