Use an equipment list to plan your mobile pit.

[Zilla]

As I started to draw the plans for my new mobile BBQ pit I felt that I was guessing on what I wanted in a mobile BBQ rig.  I never felt comfortable until I backed up and made an equipment list of everything that I might carry to a competition throughout the year and assigned a place for everything to go.  I now feel much more comfortable that I'm not forgetting anything in the design.  If you have never done a comp on a well stocked pit you should get some opinions from others on your personal equipment list.  After cooking with Craig and Crapshoot BBQ ( a very well stocked outfit) this is what I've decided on.

Pit Equipment list and where it rides


18x24x60 truck box (mounted on the passenger side of the trailer)

General Toolbox (Square Plastic bucket with bucket boss insert)

Zip ties
Utility knife
Electrical adapters
Duct tape
Diagonal Cutters
Tie downs
Ball end Bungee
Cord
Rope
Ratchet Straps
Bungee cords mixed

General supplies stored in bins

First aid kit
Water Heater fuel bottles
Bug spray
Heavy duty tent stakes
Spikes
3# Maul
Pry bar
-----------------------------
Paraffin lighters
Matches & Butane Lighters
-----------------------------
Paper towel holder
Paper Towels
Trash bags
Zip lock bags
-----------------------------
Canopy sides
Table leg extenders
Hot gloves
-----------------------------
Cook box
Canopy light
Pit light
Clock
Extension cords  
Fan
Water heater
(Coleman)
Camp Stove

36x18x18 underbody truckbox (mounted on the drivers side next to the pit)

Bus tubs
Cleaning supplies
Meat gloves
Latex gloves
Foil
Foil pans
Cutting boards
Lunch Trays
Bar mops

Center section (open area in the center of the trailer)

Chairs
Table
Generator
Gas Can
Water tank
LP bottle

Under Pit (pit raised 10" to allow some storage under the pit)

Canopy
Broom
Shovel
Fire poker
Trash bag frame

Roof or Inside Truck

Sleeping bags
Pillows
Duffle bags (Clothes)
Food & Drink Cooler
Bikes
Cots
Dry food box
Pots & Pans Box

Tongue storage

Meat Cooler

Wood Bin

Firewood
Charcoal
Charcoal chimney
Buckets
Ash pan
Grease bucket

Tongue Box

Jack & Tire Iron
Wheel chocks
Tools
Trailer parts
Jack Wheel

Frame mounted Spare Tire

Firebox
Grease bucket

[serialgriller]

that's a pretty comprehensive list there, bud.  if you've forgotten something, i would be hard pressed to tell you what is is.