It will be interesting to see how they plan to cut the payment to those who would normally get less than €350 if working, will it be self declaration or will revenue check everyone's previous income?
For those of us self employed other factors come in to play such as seasonal adjustments/capital expenditure etc all of which which can skew calculations.
Similarly, I guess PAYE workers, particularly those most affected in the leisure/tourism industry would have more work/overtime in the Summer months, so a weekly average over the year wouldn't be a fair calculation.