I already do a mobile service but only for washing and wax top ups. Anything else has to be in a controlled environment. I dont care what anyone says, a unit is essential if you want the best out of the work. We go as far as to set the humidity and temp to what it needs to be for applying coatings etc. I cant be having my standards to be compromised by and old dusty garage or the wind or rain etc.
forget about using a bloody gazebo for machine polishing under!!!
If a customer can provide a clean garage with enough space around me to work, ill carry out pretty much all my work other than correction details there.
Otherwise, ill rather let someone else who doesnt full understand the detailing concept to try they're best and battle on, whilst risking their own rep, not mine!