Love da little fishies
wow that looks cool. You have used it and are satisfied?Hi Denny,
Try a threader fly box (see https://rivertraditions.com/store/threader-fly-box/). You can load up several flies per threader when you're at home and have access to a magnifier. Plus, the metal threaders push through obscured hook eyes much easier than a leader. This works really well if you already have a good idea of what flies you are likely to use.
They are easy to use. Put your tippet through the diamond-shaped section of the threader. Pull up your fly. The leader will end up in the eye of the fly and ready for your knot.