Obrien made a few ski's like the F44, I had a Krypton back in the early early 90's and it jumped the wake great and threw massive spray. It was an odd shaped ski not to great for salmon. The biggest thing is getting an wide ski so you could slow the boat for jumping and freestyle, hard jump a ski above 30mph.
here's a link to the o'briens shape;
ps. wakeboard are more fun, salmon skiing is a workout!