Destroy object with more clicks depending on Scale?

Ok so i have this script below and with it i can destroy any object with the "smashable" tag by left-clicking when the cursor is on it. Now the next step i want to take is to require more than one click in order to destroy an object depending on the scale of it. Is there any way to do this? I was thinking about making a variable that can check the scale of the object and then if it is more than a certain amount, i need more clicks to destroy it. I also found something about Vector3.Scale..Thanks!

 function Start(){
     Screen.showCursor = false;
 }    
 
 function Update(){
     if(Input.GetMouseButtonDown(0)){
         var ray : Ray = Camera.main.ScreenPointToRay (Input.mousePosition);
         var hit : RaycastHit;
         if(Physics.Raycast (ray,hit)){
             if(hit.collider.tag == "smashable"){
                 Destroy(hit.collider.gameObject);
             }
         }
     }
 }