TonyStott discribes the current situation pretty well. Back in 2010 I got tired of waiting for Hobie to release their promised jib option so I developed my own sails. I outlined all the designs and construction in great detail on this thread The ultimate Tandem Island (hydrofoils,spinnaker,jib,etc) viewtopic.php?f=69&t=33720
I have so many miles on most of these sails now some have worn out (way over 2500 sailing miles). My original 35-40 sq ft jib sail finally blew out and am using just an old Hobie Kayak sail currently for the jib (22 sq ft), it still works great and I don't go out without the jib. It increases the performance of the boat, and also allows you to point much closer to the wind.
I have my new sails designed, and will start sewing them up during the next couple months. My new setup will be.
Jib 35sq ft furlable convertable soft wing sail. (can be used as a standard jib or a wing)
Mainsail 90 sq ft furlable convertible soft wing sail (made from the TI main sail).
Rear sail 25 sq self aligning wing sail (launched with halyard up rear stay line), will likely only be used on a reach in low winds. (still unsure if I'll make this one).
Assymetric spinnaker 135 sq ft ( only for downwind (90-270 degres) furlable.
Total sail area will be 285 sq ft.
The easiest solution is to just rig a Hobie Kayak sail to either a AI or TI as a jib, many have done it, most of us have several Hobie Kayak sails just lying around anyway. Doesn't need to be anything fancy just to try it out and see if you like it.
The boat is specifically rigged to exploit the typical very low wind conditions on the gulf coast (around 5mph typically during the summer).
I'm converting everything to wing sails because they are more efficient, and create much less healing moment to the hull (ie... the force that is trying to tip you over)