More gripes = more prayer?

In Exodus 17, the Israelites again complain about the lack of water, and again God provides water (from a rock) at Horeb.

Then we see a story about Joshua going to battle with the Israelites against the Amalekites. As long as Moses held his staff aloft, the Israelites had the advantage, but when his arms got tired and the staff fell - the Amalekites took the advantage.  Finally, Aaron and Hur helped Moses hold his staff high for the entire day, until the Amalekites were defeated.

Then the Lord said to Moses, “Write about this battle. Write these things in a book so that people will remember what happened here. And be sure to tell Joshua that I will completely destroy the Amalekites from the earth.”
The Lord still intends to wipe out the Amalekites, but this will not occur until David's reign.  Actually, Saul began a campaign against them, but misunderstood God's will about the meaning of:

'You must completely destroy the Amalekites and everything that belongs to them. Don’t let anything live; you must kill all the men and women and all of their children and little babies. You must kill all of their cattle and sheep and all of their camels and donkeys.’”

After Saul's death and David's kingship, David killed almost all the Amalekites in battle - except for some warriors who escaped on camelback.

Finally members of the tribe of Simeon, who moved to the area of Mt Seir, encountered the remaining Amalekites:

Five hundred people from the tribe of Simeon went to the hill country of Seir. Ishi’s sons led these men. The sons were Pelatiah, Neariah, Rephaiah, and Uzziel. The Simeonite men fought against the people living in that place.

There were only a few Amalekites still living, and these Simeonites killed them. Since that time until now, the Simeonites have lived in Seir.

In Exodus 18, Moses is reunited with his family near Mt Horeb when Jethro, his father-in-law and a priest in the area of Midian travels to meet Moses.  Jethro spends time with Moses, and offers good advice to him on organizational structure and delegation of responsibility.

Other than Israelites gripes, which God hears and addresses, there are no prayers listed in these two chapters.

But we do get to see how associating with (and listening to) people who honor God bring blessing into our own lives.