A Cat Trax is only an answer if you need to move your Cat without concerns for height. If there is an issue with having to move it higher than the waterline, you may want to consider add-ons to get your Baby back home.
Unless you have patient (available) neighbours, you are stuck with trying to get the Wave home on your own. As I live in a region that only has neighbours during the summer, I've had to find means and methods to haul my boat up a 20 degree incline for 75 feet.
The Trax are your main wheels but if you have to solo winch your boat, another set of wheels have to be used to make a 4 wheel method of hauling.
The C-Tug kayak system can be used attached near the forward crossbar. (one for each hull). They will hug the hulls if you are using a solid fastening system such as kayak tie downs or ratchet straps.
You can modify an electric 12V trailer winch but it is slow and noisy (and needs a 12 volt power source, or a 110V converter on an outdoor extension cord).
What I have found works like a charm is a product called a SkyWinch.http://www.greenfieldproducts.com
This is a variation on a manual trailer winch but also uses the same rope locking method of a manual anchor winch. It is designed to haul 350 lbs dead weight with a max of a half inch rope, but your Trax will certainly lessen that dead weight.
This product also has warnings all over the place to not use it for human transport. If that is the case why did they call it a 'Sky' winch??
If you have no rise from the water to your home, great. I posted this for the many people that do.