Backing up a Development instance

I know about the various ways for backing up an Oracle instance (hot,cold,etc.), but was wondering about what should be backed up.

For production instances it is pretty straight forward, you back up everything: datafiles,control files, archive logs, yada yada yada, but my question is as far as a development instance in which you are are mostly interested in maintaining the data dictionary wouldn't it be good enough to just backup the control files (and probably datafiles periodically so don't have to reload test data). Then master instances probably want to backup more again, but in both cases probably don't need to do archive logging or hot backups other then for testing recovery, do you??

Are there any guidelines regarding this?

Thanks,

-- 
No wonder nobody comes here--it's too crowded. -Yogi Berra

Neal L. Nachtigall
Neal.Nachtigall_at_lodgenet.com