This is probably a very basic question and perhaps not appropriate
for this group - please let me know if that is the case...

I am now the proud owner of an old corsair number 136, and have spent
a very happy weekend bobbing around Port Phillip Bay in it.

I'm having trouble beating into the wind. (2 miles out and back and
only a few hundred metres further up the coast!) What are some of the
factors that affect upwind performance?

Could the very old sails be the problem? Weight distributon in the
boat?

Any help, or pointers to on-line guides, very much appreciated.

Sam Coates