Not an owner and haven't been in the industry long, but have to recommend the AIPT FastTrack course.
Has a 10 week practical component where you learn with different industry professionals including physiologists, PT's and gym owners.
As well as the opportunity to train clients in a gym environment before you become accredited, so that when you do go out into the field you already have experience.
Not just an online course where you didn't actually meet and train people.
It took me the 10 weeks of the course, plus 2 months for the online theory and I had my certificate 3 & 4.
I got around 50 hours doing practical course work, and another 20 hours training my own client.
Plus whatever the theory took, not long for me apparently. Most people it takes longer to 12 months.
As part of my CEC's & PDP's I did a few courses with
Adrian Rodriguez which was awesome.
Maximal Strength techniques and Strength to Power Conversions were informative and gave me a lot to think about.
It's always good to have your own experience to back up your accreditation. Whether it may be the small amount from the course.
Or preferably life experience such as big weight loss, transformations or a consistent fitness regime.
It means a lot to clients when you can honestly tell them what works because you've done it yourself.