Lexi is looking great very fast learner. A couple of things to keep in mind. You cannot cross the start line so be careful getting her used to you running next to her (it can also make it hard to start the next dog). And you don't have to do all four jumps when training. You can move up so she is only doing 1 or 2 if she is loosing focus or even just for warmup.
Yes, to ^^^^^ this. In Duncan's first comp, I passed the line a few times. Bad me.
Just a few training tips, if you don't mind. If you do, please ignore. Letting her run at will is missing some of the important pieces of flyball that you will eventually need (because it is addicting once you've been to a few competitions). I HIGHLY recommend going to a comp if you have the chance. Go and bring a crate for Lexi. She will need the practice of learning to chill out in the super-charged atmosphere. I know she does agility, but there is a charge in the air (and the constant roar of a huge group of barking dogs) that is different.
Reduce the number of jumps. Start with none and hold her (preferably by a harness, it gives the dog something to strain against while you build their drive with "Go get your ball!" or whatever you say) about 10 feet away. Give her your cue to go (ours is Reeeeadddddy, Seeeet, GO!). This will teach her to surge when you want. You need to train in the reflex to surge forward on command. Once she is going when you say to go, move behind one jump. You may move back behind all four jumps in one practice. However, at the next practice, move up again. You will probably move back behind the last jump more quickly. Eventually, you can warm up once up close and then be ready in that lane.
Even though you are on the hit box (we call it a ramp), don't skip box-work. Stand about 2-3 feet from the ramp (eventually it will be the box) and hold Lexi on your right (it's easier if she's wearing a harness that you can hook your fingers under). Use your surge cue after revving the dog (mine sounds like "See you ball? Getch your ball! Reeeeaddddy, set, GO!), gently move the dog forward with the harness (only needed the first time or two, while they get the idea of what is expected) while stepping forward with your right foot. While the dog hops on the ramp and is getting the ball, pivot to your left and pull out tug (I pull out treat) when the dog is committed to having gotten the ball. Have a big party, repeat. Up close box work reminds the dog of the swimmer's turn that is your goal.
Once you are on the box and triggering it, the box work is SUPER important and also really quick. I do 5-6 box hits per practice, just to keep Duncan doing his beautiful turns. And it has really paid off. Everyone is envious of my dog's foot placement.
Hope that helps! I have a feeling we will be trading doggie sport knowledge. I will let you pick my brain for Flyball and I hope to get info back on agility.
Sca has a ways to go since he is less well behaved but I can almost see drool on some team members since he is fast. They are all waiting the day he runs good. An all BC team (well and a Border Sheltie) would fly! And I think Angel is a lower jump height even.