Alright so here is how I go about a multi-step compounding. This is assuming there are no huge issues (one panel has been repainted and needs a lot of extra work, chip repairs, etc..). This also assumes I am not doing the interior.
1) Soak the front of the car in PB's bug remover and/or apc diluted 3:1 5min
2) Wash the wheels. In most cases soap and water takes care of this, if it doesn't I will try Eagle One's non-acid cleaner, if that doesn't do it Megs Wheel Brightener 3:1 10-20 min
3) Pre-soak with foam gun (or without) 10 min
4) Wash the car. Most take about 30-40 min, some a bit longer, some a bit quicker. Regular routine, two buckets, sheepskin mitts, rinse a lot, top to bottom.
5) Dry. Now on this part I don't dry all the way. I dry most of the way but since I usually clay I don't worry about a little dampness. 10 min
6) Clay. Time depends on the condition, assuming "moderate condition" 15-30 minutes.
7) Tape any trim/badges I think will be troublesome. 5 min
8) Start compounding. Let's do two steps and a glaze. This is how I deal with moderate cars. So this step would be Menzerna IP, Megs 80, Opt Compound on an orange. I go panel by panel over the entire car with the first step. I may not work entirely in one panel, I work with the car - so if I'm on say a front fender and I move a bit on to the front door, so be it. I also don't worry about wiping *all* the residue away, just enough of it that it won't impact the next polishing step. On my car (G35) which is medium sized, this takes about 90-120 minutes, sometimes a bit more. This will be the longest step by far, as it's removing the most imerfections.
9) This step will depend on how well the last step worked. For the most part at this point it's finishing, so I'll use FPII, OP, SFX3, etc... on a white or grey pad. 60-90min
10) ISA:water rubdown, the entire car, including windows, any dust bits, any polish residue in seams. 30 min
11) Apply glaze if Im doing it 15-30 min (RMG)
12) Sealant/wax. Liquids go on with the PC, 10 min. Pastes by hand, 20 min.
13) While the wax/sealant is hazing, dress trim, clean doorjambs, dress wheel wells, seal wheels, dress tires, clean windows, misc bits. 30-45 min
14) Remove sealant/wax, use a qd to get any more dust. If the customer requests it I'll put a wax over a sealant at this point.
That's ~450 min or 7.5 hours assuming I use all the longer estimates for time. Usually it's more in the middle, which is right about 6 hours. I'm not sure what I do that maybe you guys aren't that makes it a little quicker. I think preperation and just doing it over and over probably has a lot to do with it. I bring an electrical cord and hose/nozzle to all my jobs, I have a tote with all my stuff organized in it so I can just grab and go. I bring many pads so when one gets gummed up I toss it in a bag and grab another. I have a little belt clip that I keep my 8oz polish bottles on (I put all polishes in 8oz bottles for easier transport). I'll sometimes use my leaf blower to dry and/or blow dust off the car if it gets covered by polish dust. Obviously the most time spent is polishing, and there is nothing you can do to speed that up (you're kept in check by how fast the machine will work), so trying to mitigate time spent doing other stuff is what helps. One other thing - I am not sure how it works for you guys, but I get dirty when I detail. If I'm worried about staying clean that impacts how quickly I work.
Things like:
- Spending time cleaning pads
- searching for products/equipment, or changing products a lot.
- washing after clay
- doing one panel at a time with each step
- obsessing over polish residue between each step
I hope this makes sense and helps.