Have to agree with what Mumbles said.
But I'm more, or less lazier than he is, (in fact I know I'm much more lazier, but that is another subject), I bought/purchased an electric Coleman pump to get the majority of the air quickly loaded into the tubes on my pontoon, & also have used a 12v electric emergency light/airpump, to inflate my float tube, with a clear plastic flexible tubing that you can buy at almost any self help/handyman's hardware store. They sell different size diameters, wall thickness, & lengths. What I need is to buy one of those pvc ammo boxes that are waterproof/watertight to put all of my odds & ends into when they are in storage, like straps pumps, etcetera.
Having an electric pump takes the drudgery out of filling your tube, but having a reliable hand pump can be an absolute necessity out on the water.
With that said, there are a number of "other" items I consider necessary to my survival, should Mother Nature decide for my "plans" not to work out as speculated.
Consider your safety 1st, foremost, & last.
Because out on the water is no place to be having issues with your equipment.
Like a good scout be prepared for the worst, & hope for the best.
You'll enjoy your time in the outdoors a lot better knowing that you're ready for whatever Ol' Mother Nature decides to throw your way.
I always keep/take a little ditty bag that has
two disposable rain poncho(s), one 6" piece of a fireplace log i cut into 6 smaller 1 " pieces, three disposable lighters, waterproof matches (15pcs.),
3 sealable freezer baggies, in which I've placed; an extensive 1st aid kit containing, forceps, suture kit w/scalpel, bandages in different sizes, including 4x4's Tylenol, Benadryl, (including my prescription meds for 3 days, with my prescription pain killers,Tramadol, Vicodin), Bee sting, & Snakebite kit, hydrogen peroxide, mercurochrome, Q-tips, toothache meds like, Anbesol, mosquito repellant (w/100%Deet), extra mosquito repellant, small tubes of hydrocortisone, triple antibiotic ointment, neosporin, extra AA, & AAA batteries, with a small flexible dashboard solar charger, and, finally, 3 pkgs of instant coffee, (with powdered creamers & sugar packets). I will be prepared for almost any emergency that arises.
If push comes to shove, I'll blow up one of the baggies into a pillow & cover up with a poncho to stave off hypothermia, while getting some form of rest.
I've been out there without, so I've learned a lot about how to do with just a little.
And yes, it seems like a lot, but in actuality it doesn't take up much space & is under 3lbs.
Hoosier friend,