Yes, the eTrex H has a decent trackback feature and the screen is quite usable in place of a cyclometer and to see your squiggly-line path. When you activate 'trackback' it'll analyze your path and identify where you made significant turns (most of these will probably be at road junctions but some will also be where the road has a curve). Then as you approach the turn an arrow pops up showing the direction.

But note that using trackback only works to retrace your path - frequently there will be shorter ways to get back on course which you can see if you have a unit that includes maps of the area. So you might want to consider models like the eTrex Venture or Legend which do have map capability.