Forgot the OP mentioned snake bites. Those dual punctures are tougher to patch. Do you use two patches overlapping, one that just barely is big enough or the long patches crosswise that are too long for the job or cut down a long one to e better size? None of these options is perfect. You tend to have a lot of non-stretchy patch and little inner tube, so if you use a smallish tube, there is a lot of stress to the patch edge and tube there as you inflate it.

I don't like telling OPs answers to questions they did not ask, but this sounds like a case of either too small a tire or too little pressure if snake bites are happening a lot.

Ben