Flyinbrian,
I use the free version of Log Ten on my iPhone for my basic entries. I can't help you with Log 10 Pro questions, but if you are interested there is another log book program out there which I feel is superior in most (but not all) areas. It's called Safelog and they've just introduced the software to go with virtually every smart phone. Safelog has great customer support and the the program is very diversified, that is; it is compatible with U.K, Canadian, Australian and U.S logbooks - you choose which one you want.
Thought I'd throw it out there. Hope you don't mind.