All this stuff is bringing back my ice cream headache.

Hydrophobic, Hydrophilic, it's all Hydro-PHALLIC to me....
All I wanted was purty, shiny hulls and I got em.
New question..... Triradial vs. Horizontal-cut dacron sails.
What is the difference? Why do I want one or the other. Why does Triradial cut cost a lot more? $820 vs $ 975 from Calvert for a 5.0 oz Yellow Square-Top Dacron Main.
Thanks
Greg