http://www.atlanticjetsport.com/index.php?l=product_detail&p=575Have you seen these?
I have a Move 2 trailer and it was impossible to pull it out of the sand manually (2 guys and 2 girls). One Spark though? Maybe, but have a back-up plan. Remember too, if you are in chop and the foot-wells fill with water, your 400 pound Spark suddenly weighs a whole lot more! Makes a huge difference when trying to exit the water.The area I would launch from would have a long shallow so I can't back it up I wonder if it would be possible to walk the trailer down to the water with out issue? I have narrow tires on the trailer and that is the only thing I'm worried about.