I hire relatively entry level folks for advanced product technical support so my funnel is naturally large since they aren’t specialists and I can teach/train the stuff to anyone who is a technical hobbyist or enthusiast. This has been my best way to keep top of the funnel high, over the years I also got more and more comfortable hiring folks with less and less technical/startup background but mostly my advice isn’t helpful for roles that require a lot of specialization. At that point it’s good to have a solid network, a good reputation, and a successful company. That’s another thing that’s kept me from having to expand my funnel much - my company has been doing really well for eight years and is only becoming more well known and mostly we get a lot of inbound. Besides that, hire good recruiters, sourcers, and recruiting coordinators. They know their shit.