Everything John said...

Plan to land out on your next flight. Find a suitable field from the
ground, walk it, measure it, then go flying. At the end of the
(perhaps local) flight, land there. Of course, you'll need to line up
a crew, prepare the trailer, etc.

I flew a 1-26, long, long ago and I remember that every flight was
likely to end up with a landing not exactly where I had planned. That
was a big part of the fun of flying the ship - all the friends needed
to support me and share the ship so we could all crew for each other.

Work on your spot landing technique. If you can't get stopped EVERY
time within 5' of a predetermined spot that you choose prior to
turning final, if flying at the home airport, then you need some dual
instruction to determine why. At our club we had a requirement to
land over a barrier, then get stopped within 500' prior to taking the
1-26 XC. The barrier was a pair of 16' poles with a flag banner
stretched between them. The length was about 100' and a weak link was
placed in the flag line so it would break easily if snagged by the
glider.

Here's a YouTube video posted recently of a 1-26 landing at a model
airplane field that shows a well executed landing in a small field:
http://www.youtube.com/watch?v=9g7lUZ506Zw

-Tom