Sheepdog - it seems you are in a pickle.
No money, but lots of horses, several unbroken. Combined with being short on expertise you present a real conundrum as to what to do about your spirited 4 yo alpha male gelding which earlier as a 3 yo stallion inseminated 4 mares. Not surprisingly, you can’t catch the horse. So you ask for help over the Internet.
Oh My, Lady, if only it were that easy.
Firstly you need to bring this thread to the attention of Kevinhorses & Smrobs. Listen to what they have to say. They know about horses from the Western perspective.
In a separate post I’ll finish off and post an idea as to how we in the UK might tackle your problem.
Most of we Brits can’t use a rope and invariably those stallions not kept for breeding are castrated at a young age. It occurs to me that you want to close the stable door, after the horse has bolted through the door you left open,