That's a good solution
Make the 2 blocks on a plywood base that you can clamp on the bench. Another helpful add on would be an extended fence that runs all across the saw and the blocks. It will reduce your crosscut capacity 3/4" or so, but it will be helpful cutting longer lengths accurately, if used with a stop..
The answer to your question will only be as detailed and specific as the question is detailed and specific. Good questions also include a sketch or a photo that illustrates your issue. (:< D)