Your needs might require that longer frame, but check out the lightweight frames Jon the Welder is building for those boats. They look super light weight, and I believe Hyside still shows them on there web site. He is on the Buzz if you're interested.
Not affiliated at all, but they look kinda cool to me, and I'm partial to independent small businesses because I am in business for myself.
We can't always agree, but we can still be civil to each other.