How does that help with the packup? Does it have a suck mode as well?

I have never understood people using electric pumps for kites. You still have to finish off with a hand pump to get up to pressure.

It takes me 70 pumps from my 5m wing and about 90 pumps for a 12m kite (thinner bladders than a wing) and takes barely 1-2m.

Slow steady pumping is best because it avoids bladder alignment problems and gives a gentle warm up for the coming session.

My biggest problem with setup and packup is the need to do separate trips to ferry the board and wing between the setup area and the water, and having to find stuff to tie the board and wing to in strong winds. I suspect the solution to that problem is smaller, lighter boards with decent handles that can be managed with one hand in strong conditions.

My 5.2 Gaastra Poison takes 111 strokes with one 2 way pump and 120 with a Naish 2 way.
Since I'm almost 72, I need a break before full inflation.

Have one the same with digital readout.Set it up and it does the job in no time.They are a few kilos so grab your pump if a long walk is required.

Mine is simple. Board with foil attached out of car borrow a pump at the beach so a 1/4 of the time a kiter takes

The Naish 'abracadabra' speeds things up