Hello and welcome. This is just a short note to introduce myself or to request needed information for your problem. My name is ***** ***** I have been in the dog field for 25 years. I am a Therapy Dog & AKC Evaluator/trainer/ as well as an assistance/service dog trainer, specializing in behavior. It will be my pleasure to help you today. It may take a few minutes for me to type a personal response or type questions regarding your situation. Your patience is very much appreciated.
This is a problem with many dogs. It is a prey drive which is also encouraged by the noise of the skateboard.
You may be able to get her under your voice control from a window, but you would need to teach her the command first in a non distracting area such as inside the home then gradually work on that command outside in more distracting areas then you have to be there with her when a skateboard comes so that you can work on it during the actual motion. You may have to ask a skateboarder to help you so if they are neighborhood kids they may be willing to help you out.
The command you want to teach is Leave it. Once this command is learn it can be used for anything you want her to leave alone.
Another suggestion if you just want to stop the barking is to place a barker breaker outside which will go off when she starts to bark. Many dogs do not like the sound and eventually stop barking after one or two barks. The only problem is. is that the neighbors may be able to hear it go off as well. It emits a high pitched sound for a few seconds then turns off.
Other items to try would be a bark collar that squirts water when the dog barks. There are also some that squirt citronella. Either is one that the dog is not going to like happening and eventually it learns not to bark.
All of these items can be found on Amazon or in a pet store. If you go with the barker breaker it will need to be housed so it does not get wet, so it can be put under a house eve, in a window, or in a bird house outside.
teaching leave it can be found here
Clicker training/positive method training/ print off
I 'll see if I can find the items on Amazon for you
Barker breaker https://www.amazon.com/DOGTEK-Sonic-Control-Outdoor-Indoor/dp/B00ESMUWS6/ref=sr_1_1?ie=UTF8&qid=1480300208&sr=8-1&keywords=barker+breaker
Here's a collar that gives a vibration and is good for small dogs https://www.amazon.com/dp/B01M09W9DC?psc=1
Here's a citronella collar. Most dogs do not like the scent of citrus and that is why this one works. https://www.amazon.com/PetSafe-Anti-Bark-Spray-Collar-Citronella/dp/B000H3VAQ8/ref=pd_sim_199_6?_encoding=UTF8&psc=1&refRID=J0KJSKEF1G7X3NRGHM71