Art of War: Spawn Larvae

Strategy, tactics, and skill. At the heart of StarCraft II are the legion of skilled tacticians and brilliant strategists leading armies of zerg, protoss, and terrans to war across the scarred battlefields of the Koprulu Sector. Knowledge is power; the greatest commanders throughout history earned their victories not merely by virtue of strategic brilliance, but also by applying themselves to rigorous study of warfare and the tactics used by those who fought before them. You too can tap into this valuable resource, and that’s where StarCraft Art of War comes in.
Are you a veteran player? Are you new to StarCraft II and striving to improve your skills? In this weekly feature, we invite players of all skill levels to ask questions, share their tactics, post replays, and provide advice for understanding, executing and defeating today’s most popular strategies. This week, we’re analysing: Spawn Larvae.
What technique do you use to make sure that you never miss an inject? How do you manage your Larvae to build a better swarm?
Join the Art of War discussion here.

main + a queen on 5
natural + a queen on 6
third + a queen on 7
inject looks like this then:
5, 5, v, click, 6, 6, v, click, 7, 7, v, click
i dont think its optimal, but i got used to it
a macro hatch without a queen doesnt serve much purpose though.
i have problems with macro hatches that i cant bind it to a button. 4,5,6,7 are taken, and i use 8 for evo chambers.
so i have to manually inject macro hatches..which sucks
'Once you've got the hang of it, you can inject in a couple of seconds'
But anyway, I don't really like the inject mechanic. It's a repititive task, and more people would bother with it if Starcraft 2 was more of a fun game than a competitive one. Injecting can be very unforgiveful at higher levels. But then again, they have learnt to just deal with it. I've given the mechanic some thought, and I tend to blame if often when I'm playing bad. When you're injecting, the clicking part feels unnecessary. Remembering to do it is the most important.
Just never use this method if you have less queens than hatcheries for some reason, then its better to inject a bit slower, else youre queens will run all over the place, and thats a mess lol
Double tab 2 during battle to go to the first Queen, inject first hatch.
Then use minimap to locate hatchery's (queens still selected).
22 - V click - click minimap - V click - click minimap - V click - ...
Or something like that (haven't played in awhile).
I know there are better methods but i am used to it ...
(all hatchery's under 1 ofc for fast swarm reproduction)