The problem I have with that, is that to know how long someone is looking at me, I need to both see when they start looking at me and when they stop doing so, and that inherently implies that I'm looking at them for longer than they look at me, unless I intentionally look away when they start looking back to balance the time out, but then I feel like that looks suspicious, like I've been staring and don't want them to know.
It also requires realizing I've been looking at someone, which can be a problem if I stare off in some direction while distracted thinking about something, not really paying much attention to the visual stimulus I'm getting, only to realize a bit later that there's a person in whatever direction I've had my eyes and now I look like I've been staring at them for however long.
He's gotten a handful of interviews (maybe a dozen, which over that time period doesn't seem like very many to me but I don't have enough job hunting experience to say). Ive generally asked him about them the day of, he's usually thought they've gone well (the places that have actually interviewed him have usually been fast food type places, and have usually asked him more about availability than much else from what he's told me), and often they've told him some variation of "we should give you a call with our decision within a week", after which all but one has never actually done so. I've not tried giving him a mock interview (I've been lucky enough to get hired by the first place to interview me both times I've been job hunting myself, so I have very little notion of what exactly to ask to simulate such a thing), most of my assistance to him has either been trying to find places he hasn't applied yet, helping him make his resume, and relaying advice from an aunt of mine with a lot more general life experience. I've also tried recommending him to my workplace's HR a couple times when they've had entry level positions open but he's never heard anything from applications there either. As far as seasonal work goes, I don't know if he's applied to any tourist stuff or not, I've not seen very many such jobs listed when I've looked around job postings but I might not be looking in the right place. He has tried applying for temporary landscaping positions a few times without any luck though.