Why would you WANT your "main" to be always in the center/symmetrical position? IMO, that's just signifying to the rest of the world "here's my main!".
well, thats the upside and the downside...
..i personaly like to have my main in the 'Center' or befor the line of my alts for pve, in pvp i would mostly also use the 'normal' formation methods, to don't reveal my 'master'.

A short introduction how to do a line can be found in the ftl-wiki under Formations:
http://www.dual-boxing.com/wiki/inde...tup#Formations

as the above is for 5 chars and therfor a little complex, here an example of the concept for only three chars:
Focusless, targetless, 'leaderless' setup.

Are you telling us that FTL setups don't allow you to bind "F" to "F" on all accounts?
na, of course f->f is possible in an ftl