It looks like you've made an effective emergency repair. It's easy for the rest of us to be armchair sailors. As for whether to trust it or not and for how long...only you can make that call.
Your idea of inducing heel by halyard is not a new one. If I'm correct, some riggers will do this when they tune masts. And, I've heard of the halyard to an anchor trick when a boat has run aground. But, there are dangers... Several years ago, I saw the halyard to induce heel trick done to repair a thru-hull, and it worked well for the most part. The guy forgot to close the seacocks on the other side of the boat. By the time the guy had replaced the thru-hull and valve, his boat was half-filled with water. He hadn't noticed the rising waterline because the boat was heeled.
So, be careful and think things through.
Skipper, J/36 "Zero Tolerance"