I run an additional set of ratcheting blocks inboard directly abeam of the secondaries. So the lines start at the spinnaker, lead aft through the tweakers (twings) then to non-ratcheting blocks on the aft padeyes. The lines then move inboard back up the rail to the ratcheting blocks then do a 90 degree turn onto the cabin top secondaries. I find this extra set of blocks keeps the cockpit a little tidier and keeps the crew from doing the "spinnaker sheet limbo". In honesty these came with the boat when I bought it, but I find that the system works quite well.
Here's a photo for reference...
![[Linked Image from farm4.static.flickr.com]](http://farm4.static.flickr.com/3139/3484776571_7c31ffc2e3_o.jpg)