The stock shifter height does present a challenge for large/thicker boots. The rubber topped foot peg doesn't help either.....I really need to force my foot underneath the gear shifter.
I had the same issue with my Vee until I began raising the shifter a little at a time until it was right for me. I have switched boots since then with no need for further adjustment. I imagine that the typical tall toe of a hiking boot might require greater adjustment.Both levers have height adjustability built into their linkage. The rear brake light switch has a large nut to adjust its height. #29 is a typical fine adjuster. Loosen the nuts #37 and #34. One has has a left hand thread, I think it's #34. Check the thread direction. Then turning #29 will raise or lower the lever. For a coarse change if needed, remove bolt #36, take #27 off the shaft and replace it moving one spline different.
#17 is the rear brake light switch. The large nut is the adjuster for the switch.