David,
Have you tried the Salomon XAs.
I have seriously flat feet. We're talking foot prints which are basically round. Where the arch curves in, mine curves out. In addition to this, the transverse arch has also collapsed over the last couple of years. (This is the cross ways arch under the metatarsal heads.) This gives the IMPRESSION of a wide flat foot, and shoe fitters will often try to fit a 4E shoe. In reality though, this provides far too much volume, which you seem to have some experience with.
[Choosing a pronation control runner MAY also fail to control your flat feet, since these depend on the differential compression of two different grades of EVA (or similar proprietary foam). This is tuned to activate at a percentage of body weight of an average runner, generally around 150%, generated at heel strike during running. ]
I find the XAs have a fairly narrow heel section, with a strong heel counter. This is crucial for good pronation control. The laces allow great cradling of the midfoot, and the forefoot is pretty wide. I find two problems with the stock insoles. There is inevitably a crease in the heel cup, but this can be cut out, and there is a ridge under the arch, where insole meets the waist of the shoe. This can be either sanded or skived with a razor.
I find that I need to custom make insoles just for these shoes, if I want to use custom, due to the lower volume, wrap around waist.
I'm also keen to try the Innov8s, when some one starts stocking them in Australia, but I am concerned about the lack of under foot padding.
