Time code 36:14 McGarrett brings up 2 horses with bridles only, no saddles or other tack. Joe White can be seen riding with a saddle a couple of times, then is back to riding without a saddle, when the lone pine is reached time 37:40.
The galloping horse movements of Joe and McGarrett in close-up shots don't match the wide-angle shots. They're not really riding the horses. Also, the green-screen background is fairly obvious in those same close-up shots.
Joe's ranch is set in Montana as per the information onscreen. This is set in December but, there are too many leaves on the trees, the horses don't have their winter coats, the house is 'single wall' construction typical of Hawai'i and there are Norfolk Pines everywhere. Zebra Doves (Geopilia Striata) can also be heard near Joe's pine tree. They are common only in tropical areas.