Got a little experience with the hog lights. No expert by anymenas but heres what i found worked. We used a red lens and we made sure we lit the lens when it was off the pigs. By swinging it onto them slowly they seemed not to notice it at all. However if you lit them up directly they would take notice.
Fars as pigs and deer, kill all the pigs you can if you want to keep your deer around. Given the right feed sources its not uncommon at all for a sow to have 3 litters a year and by the time the third one hits the ground the first litter sows are pregnant. As well I can attest to the fact that hogs will breed year round, there aint a time of the year i cant go out and see new sholts.
On intelligence, I dont belive theres much smarter than an old boar. What he lasks in vision which in truth aint much, is more than made up for with ears and nose. Thank goodness his nose stays low to the ground for the most part Gives a hunter a little bit of a break. Despite the fact they are a terro on native wildlife, I dare say theres never been a better bowhunting animal made. They have provided me with many great hunts.