Is this sailboat a DS?

I’m helping out a Christian camp in FL and I’m pulling this boat out of the weeds and cleaning it up to hopefully sail on their lake. Just curious if this is a DS. Also had a few questions about it.
Is the bracket that holds the mast missing something? I just have a bolt thru it for now but seems a lil loose.
The blue rope I the middle section, is that to pull the keel up?
Can I sail it w/o the jib sail?
I found a smaller blue sail that looks like it’ll fit up there but not sure how yet. And I’ve never sailed a boat with a jib sail.
Thanks!
Is the bracket that holds the mast missing something? I just have a bolt thru it for now but seems a lil loose.
The blue rope I the middle section, is that to pull the keel up?
Can I sail it w/o the jib sail?
I found a smaller blue sail that looks like it’ll fit up there but not sure how yet. And I’ve never sailed a boat with a jib sail.
Thanks!