Player Transform Postion on Collision Javascript/C#

So I have this Skimboarding game where you run onto a Skimboard(Like a skateboard for water) and it goes from a animated walking 3rd person controlled player to a Unanimated for now Prefab with a Player with the board attached.

I have everything I want roughly working from questions on here but unfortunately I need to mix some things from a Javascript to a simple C# and as a beginner having a trouble grasping whats happening.

Right now I can Manually switch the animated walking player to the Board riding prefab with this Javascript

 // Bring Prefab Board rider to Animated Walking Player
 
  if (Input.GetKey("y"))
     {
         
         var player = GameObject.Find("Ragdoll");
       
         transform.position = player.transform.position; 
   
     }
 
 // Move Animated Walking player away
 
 if (Input.GetKey("r"))
     {
        
         var player2 = GameObject.Find("Ragdoll");
         player2.transform.position = Vector3(-400,0,27);
     
     }
 
 

And id like to do both those things at once when I collide with the Skimboard in the C# Collision script I already have( Parenting it to the Player on contact) Board tagged as Wall for now

 public class NewBehaviourScript : MonoBehaviour {
     private void OnCollisionEnter(Collision other)
     {
          if(other.gameObject.tag == "Wall") {
         other.transform.parent = transform;
             transform.position = other.transform.position;
            
         }
         
     }

I tried a couple things but it seems to break a lot of unrelated scripts saying im mixing mac and windows code. Thanks for any pointers