Small rips is sails, dodgers, etc. can easily be taken care of by a
small patch on the 'inside' and both 'mating' surfaces applied with
'fast cure' 3M 5200 (sold in small tubes). Just be sure to use
masking tape on the precise edges of the patch to prevent any 5200
that squeezes out from contacting 'other' than the patch when you
apply pressure to the repair.

I dont cart around my heavy sewing machine anymore when traveling.
Just some sailcloth & sunbrella scraps, etc. and a few tubes of fast
cure 5200. Its flexible enough for a 'very permanent' sail repair.
Ive done a full seam panel repair on a 9.8 oz. dacron sail ... still
good to go and doesnt lpok 'repaired' after 5 years.