My '78 does have a topping lift. It's been awhile since I've had the mast down, so I don't remember how it is attached at the top. However, if there is no attachment point on your mast, you could use a small S.S. strap, bent and fastened over the top.The S.S. cable ends about 2 feet above the end of the boom with a small turning block. (This may be a double block. Can't remember.) A line is fastened at the end of the boom, going up through the topping lift block, down through a block near the end of the boom, and to a cleat. This allows adjustment, to slack the topping lift while under sail.You should definitely add one to replace the pigtail, not just for convenience, but for safety. I know. I had a smaller boat with a pigtail many years ago. The boom got dropped accidentally on my wife, by me. No amount of feeling sorry about that makes up for it. I'm still reminded every once in a while.