Hi Toybuilder, I completely understand, let me explain some more.
Karen our pool cleaner and veteran of many house cleans is like everyone else short on time but has high standards for her work. We bought a pool robot to assist Karen, however she reported to us that the time used to connect the power pay out the lead and set the bot in motion whilst she goes off to another job is the same as the hose of the manual cleaner. about 4 hours later she returns to un plug the robot which then needs to cool down for 10 minutes in the water before removing and then clean out the bag put on the caddy cart and store is just the same amount as the manual hose but the bot has still missed bits after 4 hours so manual intervention was still needed. Robot was sold!

I run my pool pump 24/7 so anything that enters the pool and floats goes in the skimmers except for dirt following rain storms as that sinks. Because of the return jet arrangement the dirt doesn't sink immediately but usually moves into solution and can also get filtered that which doesn't is vacuumed out with the Pool Blaster Max with the fine bag fitted. this little battery powered cleaner is a great tool and cleaning is around 40 minutes total. No cables, no power supplies, no hoses. For us at least the quickest way from start to finish. If I were to have a criticism of the pool blaster it would be on a larger pool the battery life is not enough and if it's a really dirty pool a manual vac will cope better.