Acting? I'd have to say this is the first movie where I think that maybe I, a complete non-actor, could have done the exact same performance given by the leading man.
The concept must have been:
Just "act" like an old, dazed & confused guy who goes around methodically doing almost nothing right to try to save his boat & himself. And whatever you do, don't show any emotion. Well, on 2nd thought, you're going to have to yell out a swear once to pretend to still care. OK. Action ... well, not "action", but you know, get going
Redford had agreeing to be in this. That's easy. I also have enough self-confidence that I won't have to "keep working" @ 77 just to try to convince myself that I am still "important".
He will always be important to the film industry, because he created Sundance Film Festival, where independent and unknown writers, directors and actors have an opportunity to show their product to a distributors. There are only a handful of them in the US that are as important to an independent film director. Out of the handful that attract distributors and acting talent to support the product they helped create, Sundance is still number One. I don't care how old Mr. Redford is but he help,ed change the landscape of independent film-making. Sex, Lies and Videotape was first screened at Sundance before finding a distributor. It became an 80's hit movie and made Laura San Giacomo a star that lead to her part in Pretty Woman. It cost about 1 million to make and took in $25 million. Not a bad investment for the distributor of the film. It was also Steven Soderbergh first film, which he wrote, edited, produced and directed. The Brothers McMullen won the Jury award for the year it premiered at Sundance. Films that got their start at Sundance. Memento, In the Bedroom, American Splendor, We Don't Live Here Anymore, Grace Is Gone and Precious are just some of the films that got their start at Sundance. 🎥
He WILL always be important to the film industry, which is why it is depressing that he decided to honor this lousy film with his presence. I do see the "one-man-film" attraction, but after reading the screenplay, he should have declined.
I think that's rather unfair. Why should't someone keep on working if they want to? For Redford, that's very public because of his job and status, but there's no reason to say that it's because he's trying to "convince [himself] that [he] is still 'important'".
You though may not have been able to captivate an audience. Actors like Redford(AIL), Hardy(Locke). Hanks(Castaway), Poitier (The Slender Thread), etc. can bring people in and hold their attention with no one else onscreen.