I personally did a stronger one than this article suggests, though. I got all kinds of stuff out with my first one. I do mine with an enema bucket I purchased from Amazon. It's really not that intimidating after you do your first one, and it really works better than any other kind of enema. I honestly had my boyfriend help me with my first one (embarrassing once I think about it), because like you - I thought it was a hassle and was a little afraid I would do something wrong, but now I realize it could have been done so easily by myself.
I would not do a ACV enema unless you at least do a probiotic retention enema afterwards. ACV could flush/kill some of your good bacteria. Remember once you kill your good bacteria, it is hard to replace with probiotics.