For a tibial stress fracture would i need a boot? if so do you have any suggestions as to what type or brand of boot?

Thats an option: First it depends on where the tibial stress fracture is. If its low near the ankle or the mid tibia, a boot is helpful. You need to reduce your weight bearing for ~6 weeks for it to heal. If its at the top of the tibia near the knee, then a knee brace is more the appropriate protective item spanning the knee joint with a hinge system to protect side to side loads. You need crutches or walker.

Maybe, maybe not.: Essntially, if you have an incomplete stress fracture, you should decrease your level of activity to the point at which you no longer have the symptoms. If you can walk without pain, you probably don't need a boot. If walking hurts, you should likely be on crutches to unload the leg. Immobilization may or may not help as well. A graduated return to activity is advised to avoid recurrence.