Change your brake line

[mrlmd1]

One of the lines was clogged and not letting the pressure get transmitted through, or the line was soft and expanding with the pressure, so basically only one wheel had an effective brake. Either way, replacing the lines solved the problem and the hardest part of solving it was to realize the fault could be in the brake lines. This can happen to fuel lines too. On a SEADOO forum I am on every once in a while, one of the biggest problems with older jetskis is the gray plastic fuel lines that were used on the old days. They deteriorated and got clogged and/or crapped up the carbs. If you cut one open you could see all the junk in there that accumulated over the years from the gas deteriorating the lines. Change the lines to a proper fuel line = problem solved.

[Gz Rider]

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[5th_bike]

Slightly related, for the same reasons mentioned by many above, we have steel braided washer machine water hoses.

Because, the repeated water hammer from the machines' valves closing makes ordinary rubber hoses bulge, and then burst and flood the place, it's just a matter of time if you don't replace them regularly.