A few hints for whomever does do announcing: it really helps to have a
spotter at the last control with a radio, as we did at Teanaway last year.
A radio at a split control is nice, but each radio in the forest needs to
have a dedicated individual at the finish (the announcer can't keep up
with two data streams - one from the finish and one from the split control
- at the same time). A start list SORTED BY BIB NUMBER is essential (I've
been to events where this didn't exist!). For the individual event, I had
a large piece of paper premarked with each A class.  Every time someone
finished, their card was passed to me before posting - if they were the
new leader, this was written on the paper and announced.  Given the start
list and the paper, it was possible to quickly estimate the time for an
incoming runner, allowing me to announce "and here comes the new leader
for ..." *AS* they were still in the run in chute.  A clear view of the
chute helps, as does a good sun shade, etc.