Did you actually see the movie? Once you get past the title, it becomes increasingly obvious that the movie is only very slightly tongue in cheek, and really not even that self aware. (Or at least, it tries to be, and still manages to fail even at that.)
Mike and the writers likened it to campy B-movies from yesteryear, like Hobgoblins or Attack of the Killer Shrews - similar in tone to those, and they were pretty successful riffing material. The writers felt the same way about screening Sharknado, and thought it would work as well.
Forgot to mention, here's the link for it. Now I just need a couple of big decals for the sides of the car that say "Enforcer 6"
https://www.amazon.com/dp/B07SJ974G5?psc=1&ref=ppx_yo2ov_dt_b_product_details
FYI - if you have Amazon Prime there are a handful on there that I don't think were ever on tubi/etc. Two of my fav's:
The Shape of Things to Come (1979)
Lovely But Deadly (1981) (may not be kid-friendly)
Also, don't forget about the $2-$4 'Just the Jokes' options. A few are free if you download the Rifftrax app, and you may already have some of the corresponding titles on streaming services (JustWatch is your friend). A couple absolute must-haves imo:
Krull (1983)
Batman And Robin (1997)
Also, Just the Jokes is the only way to get to know DisembAudio!
Not sure about VOD. I figure if I'm going to spend that much, I may as well buy the blu-ray which are sometimes on sale for $6.
I'm always amazed at the quality of the live events, you guys never seem to take any nasty hits.
You guys ever need any help with motion graphics or titles, etc let me know! I work cheap/free https://www.linkedin.com/in/charlesferran
They're on TVDb. All shorts are listed under Season 3.
https://thetvdb.com/series/rifftrax/seasons/official/3
If you add s03exx in the front of the filename that works well with plex. If you have a lot as you say that might take some time but it should work.
Also Plan 9 Live