Since my family fledged I have been a SFG fan. You still fill the freezer but with more varieties and in quicker succession. Fewer gluts and more of a turnover. If you mix herbs, flowers and vegetables you get less bug grief than in monoculture beds. Mine is a chequerboard of 30cm square Paving stones and planting squares,these act as stepping stones and make it look more attractive too. GW magazine did a series on patio pot vegetables April 2010 page 88, May page 107, June page 103, July page 100 showing rotation possibilities. Well, if you try veg pots then SFG is just the same .......but without the pots. Go on have a go you know you want to.