I would not use any spray adhesive for mounting, because they are chemically reactive and deteriorate over time. Sometimes a spray mount can last a few years, sometimes it will fail in a few months. Worst of all, the particulate overspray travels wherever the air goes, including all over the shop and into your lungs, and it is toxic. Be sure to use it only in a well-ventilated area.
Aside from being temporary, messy, and toxic, spray adhesives are much more expensive than the alternative adhesives.
So, if easy, toxic, temporary, and expensive is your choice, then spray adhesive is for you.
As alternatives...
You could roll or brush acrylic gel medium sparingly onto foam board or another substrate, then dry under weight. The acrylic medium is water-borne and water-soluble while wet, so it's good for water cleanup.
You could roll or brush Klucel G, activated with water or alcohol, sparingly onto the substrate, then dry under weight.
If you intend to use foam board, be careful not to apply too much of any water-based adhesive, because it could cause warping of the board. That's not an issue with Gatorfoam (not suitable for preservation) or aluminum composite material (ACM, such as ePanel and DiBond brands), which is an excellent choice for preservation, light weight, thin profile, and rigidity.
You could dry mount to Kool Tack E-2 or MountCor at about 160 degrees-F for a minute or so.