[Elecraft] Logging and sailing - PDA?

[H. Cary III]

I'm going to be hamming and sailing in the Caribbean in March (St. Maarten and British Virgin Islands) and will take either my K2 or K3 with me.  I logged by hand the last trip and don't want to do that again.  I'm not wild about taking a laptop either.  Has anyone had any luck with using something like a PDA with a logging program and portable keyboard?
Be nice if the K3 had a logging program built into it and a portable keyboard for entry but that's wishful thinking!
I expect to hear from Lisa any day now, having ordered on May 2nd...
Any ideas?
73,
Cary, K4TM
Lynchburg, VA
K2-100 #5266
K3-100 <#200 waiting expectantly