I figured I outta chime in on this considering I'm one of the guys that went all out on trailer, equipment, etc.
Here is a thread with some pics of my equipment and trailer. It cost me some bucks but I see it as entirely worth it. I have a 65 Gal. water tank that is in the back of my truck, if you were wondering about water supply.
http://www.autogeekonline.net/forum...ile-detailing-setup-visual-pro-detailing.html
I love my trailer, I love my big power equipment, so let me share why.
1. The trailer, the equipment, the advertising wrap, is a huge marketing bonus for me that tells potential clients "I take my business seriously". Now I'm not saying you aren't serious if you don't have a huge rig, but potential clients always see you differently than you see yourself. Think about how they perceive you, not how you perceive you.
2. I love having room. I will just throw a couple of my portable totes in the back of my truck if doing mobile washes or basic details, but I love having room to walk in the trailer, and be able to haul extra equipment if needed. Do I use everything in my trailer every time I go out? No, but it's very convenient to not have to pack everything into a small space.
3. I have big ambitions. Right now I'm just doing a few details a day, but I'm set up with room to expand with a crew and employees, to do bulk washes, or even do fleet washing. I'm one of those people who thinks big, and would rather have too much than not enough.
To the thread starter... you need to do what is right for what your business model is, what market serve, what your budget is, and what type of detailing you want to do. We are more than happy to give you advice, but be very wary of anyone that says "you have you do it my way or you are making a big mistake!". I am well aware that my huge eye catching setup is not for everyone, but it works great for me and the business that I am, and the business I want to be.
Edit:
I just wanted to say that the reason I went so far with my setup, my website, my marketing materials, my equipment, is because I want to be the best. I want to be not only the best detailer in my area, but be the best detailing business, that offers the best possible services. I went "all out" on my business, just like so many other people in this thread. If you are serious about doing this, however you choose to set up your business, go all out. Don't go cheap or 2nd rate, make a real effort to be the best business and service you can possibly be. It will pay off in the end.