Any serious boater should just buy the 4 or 5 in Carson barrel as their first pump. I started with a Wonder Pump and then bought the NRS 5in barrel. After realizing the wonder pump was horrible to pump up a whole boat. The NRS is OK, but I have broken multiple pieces of it. I then bought an electric that has hi/low volume. It to is OK. I then bought a kpump mini to keep on the boat and love it as a top off. I have a 9v Coleman that is great for $29 to pump up on the ramp and then top off with the k. I also adapted a small Kobalt shop vac that is great. I was just gifted a 4in carlson and it is magnificent. You will end up with more than 1 pump, but but the beast now and you will have a good start.
Claimer: Someone that makes a claim that they have been there and done that, can do anything you can do better than you. I hate "claimers"