Best value dacron sail tape roll

[Polly1]

Where can I get a long length of this tape for a good price?
The sources I have seen all sell quite short rolls. My leech is ripping and I want to run a long strip along it
Thanks

 

[thinwater]

Where can I get a long length of this tape for a good price?
The sources I have seen all sell quite short rolls. My leech is ripping and I want to run a long strip along it
Thanks

Pictures. I'm not sure tape is the best way.