You can also put a
small Shurflo Accumulator Tank or
the large more expensive Shurflo 2-Gallon Stainless Steel Tank . Both are from Camping World catalog since it was easy to find. Our tag along trailer had the small one and I bought the 2 gallon for the 5th wheel. I found the installation space for the large one is a little tight so I have not put it in yet. That is next months project. I think I would go with the small one if I did it again.
All these tanks will do it stop the pulsing of the pump. That is better when drawing small amounts of water at a time.
Good luck and keep us informed.
Cheers,