I ponder the use of plot saver last year when I started my two plots. In the end I didn't use it but the deer never bothered my clover until after my Powerplant had died in the fall and the didn't bother the powerplant until it was waist high. The deer were in the area but seems to graze away from the plot and then overnight they mowed it down to about 3 ft tall and it never was able to get higher.
I've seen good reports on the plot saver but it isn't cheap. Well, not as cheap as me

.
Good luck with the plots.