My suspicion is that fast jonking (honking and jumping) will pay more per hour than anything other than very selectively scanning of nearby high value planets. If I'm traveling (jonking), I average between 500k and 2 million per page of data (50 jumps), which is about 45 minutes work. Call it 1.5 million per hour, on the average. On the other hand, a terraformable water world pays 600k+. Non-terraformable water worlds are a tad over 200k, so let's say a high value target averages 400k - we're talking just water worlds, ELWs, and ammonia worlds here, since we're just looking at maximizing our income.
For grins and ease of math, let's say that a nearby high value target averages 3 minutes in travel and scan time. No screenshots. Nothing else. Just that scan. 3 minutes becomes our quanta of time. A high value target is worth 400k for 3 minutes. Jonking, at 1.5 million per hour, earns 75k for that same 3 minutes. It's easy to see, then, that hitting those nearby high-value targets earns us more per hour. I suspect a lot of explorers fall in this group: lots of jonking, with scanning of nearby high value targets.
In fact, sticking with just those high value targets for a minute, with jonking earning us 25k per minute, we can see we could spend 16 minutes traveling to a high value target before breaking even (400k / 25k per minute = 16 minutes). I suspect that any of the explorers who spend 16 minutes supercruising out to scan something aren't doing it for the money.
Now, supercruising all over a system scanning everything will net you lots of 2-3k finds at the expense of a lot of time in supercruise. Clearly that's down on the far side of the money making peak. But again, I don't think the explorers who do this are doing it for the money.
So, no. Jonking isn't more lucrative.