I just don't understand why anyone would be worried about PEX leaking and the desire/need to use Sharkbites. PEX crimpers are pre-calibrated and all you do is slip on the ring and squeeze the handles until they touch each other. Can't get any easier than that. If there is any concern for leaking piping, it would be bad workmanship at the factories for the cinch clamps that are typically used in RVs. I've done many hundreds of PEX crimps and the only time I had a leak is when I missed doing a crimp one time at a fitting. Sharkbites do have their place tho. Make sure you bevel the ends of PEX before you insert it into a Sharkbite or you can get a leak.
This is re-plumbing I did under our TT kitchen counter using a standard crimper. At $10 - $20 apiece for Sharkbites, it would have cost a small fortune.
