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Also does anyone have sail plans for a hobie sail so I can cut my own pattern?
No - not for sale. The only way you're going to get that is to reverse-engineer them, i.e., you're going to have to disassemble a set and make your own patterns. Unless you're willing to invest a significant amount of time, energy and tooling into developing the capability to build them, you're better off buying them from Hobie Cat or one of the non-class legal builders like Whirlwind Sails.
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Would you happen to know where a high resolution image is located?
Yes, I do (I'm the creator of the sail pattern chart) - but that pattern is not rocket science. The only "difficult" part is the stars - and even they're pretty simple. Thirteen five-pointed stars arranged in a circle. The original sail had them silkscreened on, but stickyback vinyl is probably the way to go these days.
You could even have those sails made by Hobie Cat these days (without the stars) - they have the red and blue cloth in stock, although they're not quite the same colors as they were 32 years ago.