Bed mounted Bike rack "Ideas"

I Want to get a bike rack for the back of my truck and cant find what i am looking for so far.. (May just be my ignorance in what to call the damn thing)

Growing up my MX Trailer had 3 of these things mounted in it but way more HD Then i would need for just a mountain bike but it is essentially a v shaped hoop that the front wheel just rolls in to and is cradled to keep it upright when strapped down lightly.

Anyone ever seen such a thing for bicycles or even have a clue what i am talking about or have a better route for me to go?

The main thing is i am needing it SMALL I need use of my bed when bike is not in there but i want to be able to have it permanently mounted.

Got a new specialized hard rock and wanting to have a quick easy way to haul it since i cant just toss it in with my tail gate up.. 21'' frame 29er is kinda big for my short bed.

 

Wheel chock

 

Thank you sir found them lol was having a major brain fart