Re: Older Ladies playing golf....OK, to the OP, some advice worth about $0.02:
All kinds of people golf, different ages, sexes, abilities, etc. Who golfs in front of you is the luck of the draw. Sometimes it's a single in a cart with a plane to catch. Sometimes it's four old ladies. You take the good with the bad. Until we're Donald Trump, we have to share the golf courses we play.
Don't hit into people out of impatience. Even if you don't think you might hit them, there's always the sprinkler head, cart path, etc., that can add a little length to your shot. Generally speaking, if you are waiting in the fairway, you're going to be waiting at the tee box whether you rush your shot or not. Relax and enjoy the game and don't hop up and down waiting for the green to clear. That kind of anxiety will mess up your game, and you will have yourself to blame, not the people in front of you. Find something to do while you wait - I polish my clubs, mark balls, etc.
Should you hit someone, hit their bag or cart, or even roll up near them, be courteous and apologize. I think you'd expect the same.
As a young man, try and cultivate some respect for those older women. Some woman changed your diaper once and I bet you'd want young men to respect her. Life as an old person isn't easy - have a little patience and understanding even if you think they're being less than courteous to you. The whole 'get dissed and flash on someone' is a modern phenomenon borne of ghetto/rap culture that has no place in civilized society and especially on the golf course. I play golf in Oakland, CA (look it up) and to a person the golfers on the munis have been courteous and respectful. I don't think it's too much to ask you to show some patience and respect in a situation like the one you were in.
There's a saying even older than those ladies: you catch more flies with honey than with vinegar. I am sure if you were polite and friendly you could have talked the old ladies into letting you play through. Be nice, introduce yourself, explain that you are in a tournament, and ask them if they would mind very much if you played through as it would help you maintin your swing by playing a little faster. You may not get a 'yes', but I think you'd have a better chance than hitting into them and then expecting them to offer you to play through on your own. The larger life issue here is that if something is bothering you and you want someone else to change their behavior, figure out how to approach them and talk to them in a way to get what you want without making them feel attacked.
Take your responsibilities as junior captain seriously - your actions reflect on the club.
Finally, don't fall into the trap of negatively stereotyping women - again, this will create more problems for you in life.