If he isn't into UL than I'd also vote for the tablecloth hammock. My "name" hammocks have been put to the side since this past spring because I can't beat the comfort of my tablecloth hammock. https://www.tableclothsfactory.com/
Go to rectangle tablecloths, then go to Crinkle Taffeta and pick the size and color. No sewing required, edges are already done. Many of us have been using them this year.