Sounds like ya'll are pulling way harder than necessary. I'm willing to bet I hand sew much more than anybody else here - I hand stitch gun belts (the average size belt is 48" long by 3.5" wide at 6 stitches per inch - on a money belt that is the two ends and one long edge - 55" x 6 = 330 stitches - on a full lined it is all four sides - 103" x 6 = 618 stitches), holsters: average - 110 stitches - main seam, belt loop, etc, and sheaths about the same as holsters (I do mostly large blades 8"+). I do this much sewing practically everyday - normal hand sewing for me is a belt every other day or two and a couple of holsters or a couple of sheaths everyday and that doesn't include the beadwork I do which is a ton of stitching. The point of my statement isn't to "prove" that I'm tougher or better than everybody else just to illustrate how much sewing I do and that even with physical limitations it can be done - I have arthritis in my hands and elbows and I never have to pull that hard to set my stitches ....
1) I use a mix of wax and pine pitch which locks the threads securely so you do not have to pull hard - just snug.....
2) I wear a pair of leather gloves with all but the little finger cut-off - my little finger is what I pull against to tighten the stitches and it doesn't take that much pressure - there is no need to wrap the thread around your fingers or anything else to get them to set right.
3) I wear rubber finger cots (available from office supplies) on my fore fingers and sometimes on my thumbs - these help your grip immensely - I seldom have to use pliers except in extreme cases.
4) I match my thread size, needle size, and hole size: I generally use 5 cord linen thread matched up to an Osborne egg eye harness needle in size 0 (single aught). I do not drill, but rather pre-punch with an awl, but either way the hole should be of a size adequate to pull two layers of thread through with minimum effort. If/when things do get a bit tight I open up the hole with an awl made from a larger harness needle - I have them with 000 (three aught) and 00 (two aught) needles and use what is needed
5) I use a stitching pony to hold my work as I sew....
Here's a tutorial that I wrote on sewing leather with the adaptive techniques I use due to my having arthritis......this should help those with disabilities/limitations.......
http://www.wrtcleather.com/1-ckd/tutorials/_leatherstitch.html
Hope this helps......