Kyrrinstoch - without having more info I tend to agree with those that suggest your blisters aren't necessarily form related and possibly just TMTS. My forefoot, specifically the slight recessed area between the big toe and next, got a couple blisters there myself and also nearly got blisters a few more times but just red and burning. This includes my second year, after the first couple weeks of barefoot runs after winter. Its quite possible the skin just needs to toughen up a bit.
That being said there certainly is pushing off and then too much pushing off. I wont argue that one can run without pushing off at all, but its how your pushing off. You can run with a loose foot without much any downward force on the forefoot at all, and propel yourself with your upper legs. I think this is why I had very weak calves when I started running barefoot, I just didn't really use my calves much. Or you can push off hard enough on your forefoots that your heels never even touch the ground, or 'skin' your toes. Perhaps we are confusing terms and such, but you can certainly engage your forefoot & toes more or less for the same amount of forward propulsion.
That being said there certainly is pushing off and then too much pushing off. I wont argue that one can run without pushing off at all, but its how your pushing off. You can run with a loose foot without much any downward force on the forefoot at all, and propel yourself with your upper legs. I think this is why I had very weak calves when I started running barefoot, I just didn't really use my calves much. Or you can push off hard enough on your forefoots that your heels never even touch the ground, or 'skin' your toes. Perhaps we are confusing terms and such, but you can certainly engage your forefoot & toes more or less for the same amount of forward propulsion.