I think the Jabsco & SeaDog removal tools may give us a little better leverage, but for pumps where access space is very limited that slightly more compact puller may be just the ticket.
And even with zip ties or hose clamps to fold the blades for impeller insertion plus lots of soap or silicone lube , that process is always much more of a struggle than removal for me, same as Pascal.
I think that insertion tool may prove to be a really handy useful item . But it's a shame the website offers no info on proper sizing , or pricing, so I would have to open up the pump to measure clearance inside the wear surfaces, then call .
I'm a little surprised the fact the impeller (& its hub) tends to be pushed off-center during insertion by the housing cam did not seem to be an issue in the video.
I wonder if a thin-wall PVC pipe ( or exhaust pipe?) reducer fitting might work about as well if the right combination of sizes could ever be easily found?
CurrenSea- Too bad that video didn't include slow-motion shot of the pump working at the higher RPM to show the blades no longer contacting the wear surfaces and acting strictly asa a centrifugal pump.