A good friend of mine who is a Wilderness Pro Staffer in South Carolina totes his Tarpon 160 (16' kayak) on the top of his Miata
with no issues, because he uses bow and stern lines.
Another option for the bow line is to use a length of nylon webbing. Take about 14-18" and double over the last 3" and sew it together to form a flat loop. You can use 20-30lb. braided line in a pinch (hint hint) or a sewing machine and heavy thread.
Use an existing bolt location near the front of the engine compartment. Remove it, make a small x-cut in the webbing by using a hot knife or awl to punch through but make sure you seal the edges of the inner hole you make using a lighter to prevent fraying. Use the existing bolt to pass it through and secure it back to the frame. Close your hood and the strap should extend now beyond the front of the hood and not allow the bow line to rub against the paint. Use the loop you created to pass the secure the bowline through.
Hope you find this useful.