They are OK but much better stuff to use . Down side is short life , fish don't have room to access but edges , in some lakes they tend to moss over with algae , and bad hang ups . We have found driven in wood stake beds or bucket stake beds out last n=by several times , less hangs , and biologists say fish need 10'' spacing to allow them to swim through structures . Do a search of stake beds . There is a video or two about driving stake beds from a boat . Lots on this forum if you search stake beds . Many like to sink Christmas trees cause they are free and good way to dispose of them .
Be aware some lakes like Maumelle have special regulations that don't allow the sinking of structure .
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Takeum Jigs