you might consider pvc pipe, with threaded ends. and enlarging the suction pipe to 3" or 4" pipe. and a couple pieces of "hose" between the sch 40 pipe. so the pipe bends some.
well screens can be expensive. cut slots / drill holes into end of pvc pipe. and then wrap with chicken wire. give your self 2 to 4 feet pending on how you end up slotting/drilling the holes into the end of pipe. ((be careful if you cut slots. pvc pipe and like pipe, will shatter in all sorts of pieces with exploding force and go out in all directions as you attempt to cut slots, *been there done that*))
you might consider electrical plastic fittings vs sch40 regular plumbing fittings.
--electrical fittings do not have a taper / cone shape to the threads. as a result if you get a little mud or like in the threads you can still screw/unscrew the connections some what.
--regular white sch40 pvc threaded fittings have a taper/cone shape to them. so when ya thread them together, the threads "mesh" creating a water tight seal.
--if you end up sucking some air with electrical threaded fittings, before ya get things wet, run a piece of tape around.
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myself.... using what i had on hand quickly
2 milk crates, 2 1 gallon bleach bottles. some electrical fence wire, some chicken wire, and some scrap steel for weight.
drilled a couple holes into end of pipe. ran electrical fence wire through it to hold milk crates onto end, tossed steel on one side of milk crates (bottom), and wired them in, wrapped with chicken wire, and then looped some wire through it all to the bleach bottles to use as floats. so i could push it all out into the water and have the end not dig into the mud. ((bottles vanished on me, but end of pipe was not end mud))
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do over if i had need again. would be drill holes in 5 foot section of pipe, wrap with chicken wire, adding some steel for weight, and toss on 3 to 4 1 gallon empty bleach bottles. or a fishing boober with a longer string attached. so i could tell were end of pipe was.
if i really wanted expense, i might get some barb fittings, and what ever cheap hose i could find. and add a couple sections of it, in between 10 foot pvc pipe. so i could have some wiggle room.
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valves are rather expensive. but when you are having priming issues....
1 valve, 1 tee, 1 test plug. insert it some place on suction line, were you will be able to access the test plug and valve.
test plug = acting like a cheap valve, and place to prime suction line with some water.
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if gas powered pump. not a trash pump and not able to handle solids very well. and if pump does not have a "strainer" or "leaf basket pot" in front of it. might suggest getting one. more cost though. and amount of your use. most likely not worth it. and just spend any extra time making sure you do not suck stuff up, and if it clogs, you will most likely be right there when it does clog. to deal with issues.
