If it's not a daft question, how do shoe trees work. I have the same issue, wide feet and a high instep. I bought some Lake shoes as they were the only ones I could find wide enough but even they could benefit from being a little wider. Do trees really work to expand shoes or do they just help keep the shape?
I've used Lake in the past and found them very comfy. I think shoe trees originated back in the day when a gentleman dressed very well in his day to day life. The object of the shoe tree being to help retain the shoe shape and reduce creasing by stretching the leather after use. I assume the shoe tree is therefore slightly larger than the shoe size. I have wooden ones but not as posh as the ones Mo linked to.
I find they work well but I've only used them for the following. To stretch road shoes and winter boots when new which were a little tight for me. When these are not in use for a long period they do shrink and become tighter. A couple of weeks before I start to use, for example, my road shoes I'll pop the shoe trees in to stretch the shoes again.
I also use them with my walking boots. Walking is my wife's thing and for years I struggled to go with her, it left me so uncomfortable after 2-3 miles it wasn't worth trying. Long story short I had a proper fitting at a specialist outdoor activity shop and invested an
eye-watering sum in leather Meindl boots. These were intended to stretch with use but I hurried the process along by using shoe trees. The boots can be resoled, this clinched the deal, so I give them a huge amount of care as I believe they will last 10-15 years. As part of the care I always put them away with shoe trees in place to keep the leather stretched and push the creases out a little.
So yes for the above i find they work very well.