if it was a cut or a tear, sure... they make little repair kits. but your sounds like its rotten from sun and age... so nope. duct tape over it and cover it with a towel and keep boating. fix that stuff during the winter time. the good part is taht you have the seat and vinyl so whoever you take it to will give you a better deal since they can just undo the stitching and make a template for the new vinyl.
