What dose/fractionation scheme would you employ to palliate a metastatic colon cancer patient with several large painful anterior abdominal wall lesions?

Due to the prior surgery, there is almost always fixed bowel adherent to these scar/peritoneal recurrences. That is almost always the dose limiting OAR. The fractionation depends on the PS and life expectancy. From the description, the prognosis sounds poor so 20 Gy in 5, 30 Gy in 10, or 35 Gy in 14...