Sir Jerry,
I Learn all sorts of things on this thread.
Googled and Youtubed soaker hoses and drip irrigation tubing OTC, and DIY 1/16" drill through regular garden hose. grin
For the reminder on attention to irrigation systems, buy a donkey.

Link on Africa Forum told of fatal buffalo goring in Limpopo area SA: https://www.msn.com/en-za/news/other/buffalo-kills-hunter-in-limpopo/ar-AAZbXVS
That is where you are going IIRC.
Of course, you probably have cape buffalo anatomy memorized, no worries.

First time in Botswana 2001, I was on a budget hunt that cost me $20,000 total after cheap taxidermy by a local VIP buddy.
Second time in Tanzania 2010 the cost was much higher: I paid by sharing a tent with Walter and taxidermy out of Houston, TX.
I would have hated to have paid for another cape buffalo mount.
To get the skulls and hides home for personal arts and crafts would be my future plans.

Nothing attracts game like a cash cow,
but I will have come into an inheritance to spend before I become a cash cow.

First two cape buffalo I took with humerus-heart-lung shots.
They reacted identically to identical shot placement, first one with a .416 Rigby, second one with a .500 Mbogo, my pet wildcat.
They bucked like a rodeo bull and ran about 50 yards away and died.
All I can say now is I should've had a Four Five Eight.
I expect the 404-gr Shock Hammer at ~2500 fps MV will work wonders for one-shot kills.
Pay the insurance with either another one of those or your 500-gr TBSS at ~2300 fps from the magazine of your .458 WM+.

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Mere .416 Rigby:

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More with .500 Mbogo:

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Ron aka "Rip" for Riflecrank Internationale Permanente
NRA Life Benefactor and Beneficiary
.458 Winchester Magnum, Magnanimous in Victory
THE WALKING DEAD does so remind me of Democrap voters. Donkeypox.