Like Andy (298) says, if you can squeeze in another 6", making the board 54" instead of 48", you will find it a lot less limiting. With 48" you really are limited to small engines and 40' cars. It IS possible to build layouts in 48" (see Carls small Layout Scrapbook - http://www.carendt.com/ ) - for loads of examples, but be aware that there are hardly any track plans that haven't already been built, and that you will be very restricted in your switching abilities. I'd also suggest a removable, or folding, fiddle-stick extension of one form or another - that way it can be removed for storage, and take up less space