[Help Req] - Name of movie.

[Sexrat]

I'm looking for a movie from the 80s or early 90s. I can't remember the name of the movie, but I'll try to write down what I remember from it.

The movie starts with two girls having a picnic, while they are having a conversation one of them takes of her bikini and says "Don't Knock It". I'm not 100% sure, but I think one of them is Viviana, at least she had dark long curly hair, and I think the other one was a blonde.

The next scene is with a girl walking by the road (or having car trouble, can't remember exactly) and ends up having sex with a guy on the hood of a car.

In the movie there are several girls living in a house together, and they cross paths with some guys from the army, air force or navy throughout the movie. I think the girls had some sort of leader, not sure if they were a volleyball team or some sort of group.

There is also a scene where the girls are playing volleyball against the army guys, and another scene where there is a threesome in the kitchen where the girls live, and one out in the backyard of the house.

I remember one of the girls is named "Maria", her character was a bit shy, I remember her being in a scene on the couch with an actor (I think) is Randy West or Randy Spears or someone who looks similar.

There's also a guy that (I think) is Peter North or someone who looks similar.

- I know there's not much detailed info here, but I'll post it here anyway in hope that someone can give me the name of the movie.

PS: Links to screens or download would be much appreciated also.