For those of you that need to have accurate tide data, I have found
this little program very useful with my PalmIII that I use to plan
sailing times.
http://www.toolworks.com/bilofsky/tidetool.htm
Also have found this site extremely useful in viewing the waters and
channels in unknown areas when planning future trips.
http://terraserver.microsoft.com/terra_findaspot.htm
These are both very easy to use and very fascinating! Have fun!!
Jim in Sarasota