Snoops guide to building a heavy duty decking base

a) Plan the design and budget
b) Show Mrs the design
c) Change design to incorporate or exclude her further requirements
d) Repeat b - c around 50+ times
e) Measure area to be decked and estimate required wood for frame
f) Go to wood store to buy wood, screws, brackets, etc.
g) Balk at price of wood, screws, brackets, etc.
h) Double existing budget estimate
i) Spend 20 mins loading extremely long heavy lengths of wood on to vehicle probably not really designed to carry such extremely long heavy lengths of wood
j) Drive home without braking at all for fear of catapulting such extremely long heavy lengths of wood into the convertible in front
k) Spend 40 mins unloading extremely long heavy lengths of wood
l) Begin constructing deck
m) Re-measure area to be decked and estimate wood required for frame
n) repeat steps f - m as many times as it takes

Additionally at any point you may also like to:
1) Get evil splinters
2) Leave your drill in the sunshine and then put it under such a strain that the clutch catches fire