What to look for in a used DS II?

Over the next week or so I'll be going to check out a DS II (I believe it is an early 70's model). My previous boating experience has been on a wood/finberglass seamed Mirror Dinghy.
Any quick tips you can share on potential problem areas for would be appreciated. (I have seached the forum and have a couple of ideas already.)
Also, how can you tell if the hull is the original gelcoat or if has been painted.
Thanks in advance,
Dan
Any quick tips you can share on potential problem areas for would be appreciated. (I have seached the forum and have a couple of ideas already.)
Also, how can you tell if the hull is the original gelcoat or if has been painted.
Thanks in advance,
Dan