When I researched a few years ago, there weren't (m)any 12v inflators that could achieve high-enough pressure to inflate our Big Mable and other tow tubes, so I went with these two: the first to do 90% and the second to get the high pressure. That system has worked out really well both in terms of flexibility and outcome.
Coleman QuickPump
https://a.co/d/8R9IYtN
AIRHEAD Watersports AIRHEAD Double Action Hand Pump
https://a.co/d/cZVUnyr
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