2.
It might be a little tricky, but you can make it work.
Here are a few tips for using SpotOn:
If you live on a heavily wooded lot, be sure to use Forest Mode for increased GPS Sensitivity.
If you live on a small lot, incorporate a 15-foot buffer zone to account for GPS shift.
If you live on a large lot or need to fence through water, use the Pause feature to make fencing easy and fast.
Training is important and takes about 15 minutes a day for the first couple weeks. Take it slow! Both you and your pup will benefit.