Very few people keep waterbowls in their tanks as most dragons won't touch them anyway.
As for the saladbowl, I keep it on the coolest spot possible but where they can still see it from their basking places. For my tanks that is about in the middle of the tank (but my tanks are huge, 210GAL).
Same for me (when I calculate the size (more used to working with the length, depth, height) I get 205 gallons). I keep the food on the coolest spot but exposed.
What also helps to keep the salad/ veggies crisp: I use a shallow, narrow dish (small jar) into which I put the leaves similar to a flower bouquet and can clamp them down. I don't cut them up (only did when he was a baby). My dragon rips off pieces on his own. I only cut up veggies that are not leafy greens, so e.g. bell pepper.
Despite my dragon has no problem with being seen eating, he rarely eats immediately when offered food. (Usually I put in his food very early in the morning before I leave, but even if I put in some during the day, he isn't eating it immediately. My Taco is not somebody who runs for the bowl, despite he is a good eater.)
I do not keep a water bowl for
drinking. I mist the veggies and greens, and I also mist the edible live plants I keep in his enclosure. Sometimes I also drip some water on his face.
Most water they get just from the veggies and the insects. They're desert animals, so not developed to drink from puddles of water but rather drink the dew in the morning (which I simulate by misting the greens and sometimes dropping some water on my dragon), lose relatively small amounts of water (as reptiles they don't sweat and don't have a watery urine but the white part of their "poo" is the "urine" (urate, to be correct), that keeps the amount of water loss much lower than for a mammal and especially smaller than for a mammal that sweats like a human).
.... edit: just saw that Chris. also answered at the same time on where they get the water from and the low water loss. Totally agree!