I hand pour all my senko style baits , I use 6 -10- cavity Del Mart molds. way less plastic ( sprues & runners ) to cut baits from.. I do not have to pull the injector apart after each mold. Some guys mite put the injector in a hot pot ,so they do not have to pull them apart, but I do not have one , So then you have all that plastic from the injector that needs to be remelted with the runners...
Anyway I prefer hand pouring my senkos over injecting them..
I do have 3 injectors that I use a lot also but not on senkos..
just my way ,