I will let you know about Lusardi for sure. I could be game for a hard trail - I am a very novice 4 wheeler though haha. As long as we have some recovery gear I am sure we would be find.
I am also a novice 4 wheeler, I have some kinetic straps. Like you said, sure we could manage on hard after a moderate trip! Judging by Otay mtn is on moderate(I would call it easy n slow), and you mentioning the list is a little conservative… we could probably get around all together on hard after a little experience together.
My pup and I did Lusardi today, very simple trail, I was in 2WD the whole time. Had some drainage berms that you needed to slow down for and was a bit rocky and narrow in areas.
Awesome. Lusardi sounds like a chill time on the trails.
I think I am trying to go Saturday 10/9. I fly back in from Denver in the morning and then was going to swing home, grab my dog, and then head up there. The trailhead in All Trails starts in Julian. Lat and Long on the map says 33.05720, -116.42113
Wow, I wasn't aware of that difficult obstacle... That is quite tight. I am not as worried about the underside as it looks decently alright but that tight width gives me the scares in a truck. Being so long you basically just only one way through, completely straight. Hmm, I would have to see this obstacle in person to decide if it is worth the risk though. It is quite the drive to get down towards Anza Borrego, usually I make that an overnight trip. They have BLM lands over there you can do some target practice with as well. Real nice camping spot/off-road area.
Ya, keep in mind though, those 3rd gen 4 runners are like 70" wide at most, our trucks are 77.8" wide (without mirrors), so a little less wiggle room. I'm down to do an overnight out to Anza and hit heart attack from the back side and check out the squeeze in person at another date.
Oh yeah, good mention. I had that thought in my head but didn't make the effort to look it up. We definitely do have way less wiggle room and that thought scares me seeing as the 3rd gen 4 runner was comfy but the side to side lean got close a few times. Checking out the heart attack in person at a future date with ample time for an overnight sounds like a great plan.
Yeah, I don't think my truck would make it haha especially since the Tremor is an inch wider. I'd also have to take off the side steps bc they would get caught on every single rock.
Haha more than likely for me the squeeze is a no go but I sure do want to look at it. Come out with us when we do plan for anza, even if one of us weren’t able to make it through I’m sure we would just explore elsewhere aroundYeah, I don't think my truck would make it haha especially since the Tremor is an inch wider. I'd also have to take off the side steps bc they would get caught on every single rock.
Also, I can't make it this Saturday since I already have plans
fish creek wash is full of crazy cool finds, forgot to mention elephant knees, rock/sand formation scenery and the sandstone canyon slots are really neat! See hundreds of years worth of various types of silt. 
