My feet are wide—can I still use frontside boots?

Yes, but your options are more limited. Several brands offer frontside boots in 100–102mm last widths that accommodate wider feet while maintaining piste performance. Look at models from Tecnica (wide fit options), Nordica (Speedmachine line), and Dalbello. Do not simply size up to compensate for width, as this will result in a boot that is too long with heel slip. A bootfitter can also stretch specific areas of the shell to accommodate width while maintaining overall performance.