I have found Cadence insoles to work best for me. I have used every insole on the market and they seem to have the best combination of support and cushion out there. You can trim the toe if needed but I didn't have to. I'm an 11 and the size 11/12 worked great for me. They make my shoes and boots fit much better, much more of a custom fit feel. Cadence10 is a coupon code I used on their website for a discount. Definitely worth a try! Good luck.
These say they are all in one high arch insole, I have flat feet