Critique my Fly

Thank you both for the replies. The things I am currently thinking about when I swim the Fly are: 1. Undulate. I'm working on making that feel be more natural. Sometimes my lower back hurts the next day but I'm getting better at is, and also, my lats and back muscles are tight in the mornings. I think I'm using muscles I do not activate when swimming Free. 2. Head position. I have been told that my head stays up too long and so I am trying to work on that but am having trouble getting that feel. The result is that, without thinking about it, I just avoid breathing and usually my first 25 yards is with only one breath or two. 3. High elbow pull. I'm bad at this in the Free, but I think I'm getting it in the Fly (which coincidentally is helping me in the Free.) I can only barely swim a 100 Fly but it starts falling off after the fifty and gets really ugly and is a struggle after the 75. I avoid anything past a fifty right now because I'm trying to work on feel and make that natural. Today we did some 50 sprints and I did Fly and in the middle of them I decided to not glide (or push the hands forward) and I went straight into the pull and it changed my entire feel and tempo of my undulation and arm rotation. It felt like I was...I don't know...like I was on a crazy rocking horse compared to my push-forward style; however, it felt as though my head leads the arms and so my head went back into the water before my hands. This may be good news. I also dropped 1 second per 25 by doing this non glide style. Though it's not necessarily the style I want, I think I will work on this quicker rotation in an effort to get the feel down. My goal is to get so that I can do 100 LCM in the Fly to where I don't look like I'm dying and straining my neck near the end of it. I'll look into my kick and ask coach to watch. I have to say that it feels that my first kick is stronger (prior to my pull) and my second kick is very week (kicking the hands in.) The rooster tail of water is coming from my 1st kick, actually. My weakness in swimming are my legs and I think I need to get some fins and start working the dolphin kick. I will keep a mindful eye to this. I think I'll update in about a month and ask for more critiques. Don't be afraid to critique anything, though. I swim Butterfly...I'm a man and can take it! ;-) Thanks!

Thank you both for the replies. The things I am currently thinking about when I swim the Fly are: 1. Undulate. I'm working on making that feel be more natural. Sometimes my lower back hurts the next day but I'm getting better at is, and also, my lats and back muscles are tight in the mornings. I think I'm using muscles I do not activate when swimming Free. 2. Head position. I have been told that my head stays up too long and so I am trying to work on that but am having trouble getting that feel. The result is that, without thinking about it, I just avoid breathing and usually my first 25 yards is with only one breath or two. 3. High elbow pull. I'm bad at this in the Free, but I think I'm getting it in the Fly (which coincidentally is helping me in the Free.) I can only barely swim a 100 Fly but it starts falling off after the fifty and gets really ugly and is a struggle after the 75. I avoid anything past a fifty right now because I'm trying to work on feel and make that natural. Today we did some 50 sprints and I did Fly and in the middle of them I decided to not glide (or push the hands forward) and I went straight into the pull and it changed my entire feel and tempo of my undulation and arm rotation. It felt like I was...I don't know...like I was on a crazy rocking horse compared to my push-forward style; however, it felt as though my head leads the arms and so my head went back into the water before my hands. This may be good news. I also dropped 1 second per 25 by doing this non glide style. Though it's not necessarily the style I want, I think I will work on this quicker rotation in an effort to get the feel down. My goal is to get so that I can do 100 LCM in the Fly to where I don't look like I'm dying and straining my neck near the end of it. I'll look into my kick and ask coach to watch. I have to say that it feels that my first kick is stronger (prior to my pull) and my second kick is very week (kicking the hands in.) The rooster tail of water is coming from my 1st kick, actually. My weakness in swimming are my legs and I think I need to get some fins and start working the dolphin kick. I will keep a mindful eye to this. I think I'll update in about a month and ask for more critiques. Don't be afraid to critique anything, though. I swim Butterfly...I'm a man and can take it! ;-) Thanks!