How to skii and jet?

I am having a somewhat difficult time getting the ability to ski downhill (basically have no friction) on pressing a button. In addition to that I want to be able to use a boost or jetpack when the skiing is activated. My initial thought was to somehow when the richtclick is pressed create a force that keeps the player just off the ground and allow gravity to take effect (which is not working as of yet). However, I am open to changing my method to a more effeciant way.

var walk = 10; var drag:float = 5; var distToGround: float; var jumpSpeed: float = 8; var isGrounded : boolean = true; var height: float = 5.0; var forceMultiplier : float = 20.0;

function Update() { if(isGrounded == true) { //Do your action Here... rigidbody.drag = drag; } else { rigidbody.drag = 0; } } //make sure u replace "floor" with your gameobject name.on which player is standing function OnCollisionEnter(Collision : Collision){ if(Collision.gameObject.tag == "Map") { isGrounded = true; } }

//consider when character is jumping .. it will exit collision. function OnCollisionExit(Collision : Collision){ if(Collision.gameObject.tag == "Map") { isGrounded = false; } }

function FixedUpdate(){

 if(Input.GetKey(KeyCode.W)){
     //rigidbody.AddForce(Vector3.forward = walk);
     rigidbody.AddRelativeForce (Vector3.forward * 300);
     
 }
 
 if(Input.GetKey(KeyCode.S)){
     //rigidbody.AddForce(Vector3.forward = walk);
     rigidbody.AddRelativeForce (Vector3.back * 300);
     
 }
 
 if(Input.GetKey(KeyCode.A)){
     //rigidbody.AddForce(Vector3.forward = walk);
     rigidbody.AddRelativeForce (Vector3.left * 300);
     
 }
 
 if(Input.GetKey(KeyCode.D)){
     //rigidbody.AddForce(Vector3.forward = walk);
     rigidbody.AddRelativeForce (Vector3.right * 300);
     
 }
 
 if(Input.GetKey(KeyCode.Mouse1))
 {
     var hit : RaycastHit;
 
     if(Physics.Raycast(transform.position, -transform.up, hit, height))
     {
         rigidbody.AddForce(transform.up*(forceMultiplier/(hit.distance/2)));
     //Move player just above the ground so there is no drag
     }
 }