Tube Rope

Need a “v rope” for my boat to come off the cleats to tow a tube.HELPPPP!?
I have a 18 foot carolina skiff, it does not have the tow hook or anything like that, i have two cleats…on both sides of the boat they are for ropes to tie to dock but i want to use them as a tie off for a tow rope to tow a tube ski’s knee board etc. What is this called?? Do they make them?? I dont know if you understand what im talking about but it would come off of the cleats over the engin into the water…and then a tow rope attached to that. I am looking on how to make one myself…or soemthing…im not sure of what it would be called..if anyone has any info i would appreciate it!
They do sell these at some marine dealers, but, making one is not so hard. I’ve done a few like this on my boats when I was first starting. I would double up the section of rope that goes from cleat to cleat leaving enough slack in it to clear the back of the motor by a foot or so. This way, when you are stopped, the rope will not have to much slack so as to sink down to the prop. The ones they sell have a float bubble right where your actual ski rope connects. Connect the ski rope to this cleat rope using a pully if possible.. If not a pully wheel, then just a metal loop that would allow the tow rope to move side to side without causing a great deal of friction on the cleat rope. Hope this wasn’t too, too confusing. Except for the tow rope, (which must be non-stretch) all else can be bought at the hardware store.
Foo Fighters – Rope