yep Tony, I do indeed. My line battalions' voltigeurs are based single rank on close order bases.
So for example in a French line battalion(I use 10mm frontage for each foot figure and 15mm depth- I do it for ease of basing- you may well choose to allow smaller measurements per fig within the parameters given by the rules; in any case the basing rationale will be the same) I will have:
a)Four 30x30 bases of Fusiliers- each one has 6 figures in two ranks, 3 in the front and 3 in the back
b)One 30x30 base of Grenadiers- again this carries 6 Grenadier figures in two ranks same as above
c)Two 30x15 bases of Voltigeurs- each base has 3 figures single rank.