As others have noted, anywhere outside the main channel is risky at this low water level as none of us are used to what is there. I personally experienced "near misses" in Warm Creek and in Gunsight the past couple of days.
In Gunsight I cruised right over a large area about a foot deep while on a jetski that was not visible entering the canyon, but very visible on the way out and showed signs of several hits. If I would have been in our Stern drive boat would have been ugly.
In Warm Creek the aerial photos I took a few weeks ago helped a lot but still very different from the water level view and took some navigating to avoid shallow areas even though I knew they were there.
Personally I don't recommend out of channel speeds much above idle until you have checked the area out thoroughly.