Tubulars can be patched, but it is a bit more of a hassle, as you would need to find the leak, and apply the patch, preferably with minimal snipping and re-sewing.
Not sure what you mean by "wouldn't fit any tips?" You can re-use tires, but you're not going to get a normal full life out of them (same as anything else that's been used). As long as it is holding air, and staying on the rim securely, you should be fine.
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