Well I did upgrade to the Wave and figured out a way to store it.
A sling lift is a big nylon strap that holds up a boat and allows the boat to come off the lift even in shallow water. It wouldn't work for a Hobie Wave because the boat is so light, it didn't stay centered in the sling.
So...I ordered parts for a pontoon boat lift from BH-USA.com, drilled, and cut and assembled, and the Wave sits on it perfectly. I've included pictures below. Note that the hulls sit in the lift v-shaped bunks, PVC stanchions guide the boat in and I have ropes holding the boat down between the stanchions. The PVC stanchions are bolted onto metal stanchions below them. I plan to keep the boat on the lift all the time except for winter. This has so far held up to 28 knot winds! Notice I also tie rope around the sidestays/forestay and mast to hold it still. I welcome any construction comments and suggestions on securing and stopping movement.
Hobie Wave in a pontoon boat lift:
https://photos.app.goo.gl/RzVJHs8KM1nLkySV2Hobie Wave tied down to the lift:
https://photos.app.goo.gl/q9rvDqRAzIvkVgXi1Cheers,
Fin
P.S.: For the sake of anyone else who wants to do this, here is the parts list from BH-USA.com:
Qty Item Description
1 15245 Aluminum Guide Post Stanchions for 6" Beams - Box of 4
2 70373 6" Aluminum Cradle Beam (12.5' long) with Sheave Brackets
1 93136 Aluminum Pontoon V Bunk Brackets 6" I-Beam - Set of 4 w/ Hardware
4 82085FA 5/8" Stainless Steel Hex Head Bolt - 5/8" x 3"
4 82086FA Stainless Steel Nuts - 5/8"
4 82102FA Stainless Steel Lock Washers - 5/8"
4 82087FA Stainless Steel Flat Washers - 5/8"
Total cost was $1,300. That sounds high, but still OK for me since I got by Wave used at a good deal.