It is never going to be something that will keep the rope on the drum if strain/tension of any magnitude is ever applied to it. You could do whatever you want...but as Wolf pointed out ALWAYS maintain a few wraps on the drum and you are fine.
You can attach the end however you like - the crimp solution would be fine.
I have one of the OK Offroad lines and the end of the rope came out of the crimped terminal and ended up falling between the first and second row. Really glad I found that at home and not while winching - I had used it a bit on a recent run and decided to respool it and inspect the rope.
I ended up laying the rope from one end of the drum to the other with it held in place with some duct tape. Then I began respooling it - that first row will hold that end in place. As most know and was already mentioned, never spool out to the end and leave several wraps in place.