how to sheet jib/super jib on Hobie cat 17?

Hi All,
I picked up and old hobie 17 the other week. I'm experienced in dinghy and keel boat sailing, but the catamaran thing is new to me.
The boat came with a jib (possibly a super jib) but no bow spreader pole.
Question is how to sheet the jib? In attached picture is a rope on the trampoline that connects to small cleats on right and left side of the rear cross beam.
The jib has attached sheets and blocks, but where do I mount the blocks on the boat?

[https://photos.google.com/u/0/photo/AF1QipP0EQRjW2fEK9etqe0-n-Az44QhqrWcuL3uYLh6

Thansk

//Mats

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