It can depend on time of day as well. For instance if I’m on in the morning, I see considerably fewer people running sites. If I’m on during US East coast prime time, I see a lot more.
I’ve done 2 runs per day in the past few days. I generally start from an off-main-path site (6 jumps away from a hub, for instance) and check about 5-7 systems that head in a direction away from travelled areas. Then the next day I had back along that (approximate) route, all in high sec.
At each system, I stop to check the Opportunities, Capsuleer Day tab. I’ve been seeing a lot of Tyranite and Sleeper Forge sites. The Sleeper Forge sites aren’t that hard, but in the 4 I’ve tried, I lost the BS kill to other players with much better ships (and presumably, skills, implants etc.)
Mining sites are easy of course, but you can’t progress along mining without blueprints. So that brings us to Relic scanning sites. For me at least, in the areas I check, these are by far the rarest.
So far the best I’ve found by warping through 6-7 systems and scanning down every anomaly seen is 2 Relic sites in a run. Since I’m only using a Heron with T1 scanning gear and Alpha skills, the time taken to scan down 20-25 anomalies in order to find 1 or 2 Relic sites is tedious. (So far every run has turned up at least 1 relic site, 2 runs have found 2, and each run takes about an hour.)
For me personally, that level of tedium for that level of reward isn’t worthwhile. Admittedly, I may not be in the best areas, and of course only using relatively cheap Alpha fits (Herons, Gnosis, Hurricane etc.) doesn’t give me much chance to out-compete anyone else.
Not complaining, just saying that since I’m not all that interested in the event track rewards anyway, I’m only poking at the event because I like the way CCP organized the flow of clues and lore etc. I can see how someone in a good area with a decent fit at the right times of day would be able to complete it in a reasonable time. However that won’t apply to everyone.