Push and Pull force

Hello again.
I have created a grappling hook gun and it works almost perfectly.When i click the middle button the hook attaches to the ceiling and when I release it detaches.

1st problem: I don’t know how to make the rope visible.I saw a couple of tutorials but they were outdated because they clicked add component,but there is no add component in unreal engine anymore.I will attach how I created it the gun.

2nd problem: When I shoot the grappling hook to a ceiling it works perfectly, but when I shoot and hold it in the air my character floats before falling down.And when I shoot the ground and hold the button its like my character is standing on a pole. What I want is this:when I fire the grappling hook and miss, the character should fall down.

Unreal Engine 4 .24 | Grappling Hook Swing Tutorial - YouTube this is the link to the tutorial and at 8:10 is the visibility part.