Have someone throw something (the snitch) on a line into the pool at regular intervals.
1	Have	have	VERB	VB	Mood=Imp|Person=2|VerbForm=Fin	0	root	0:root	Discourse=elaboration-additional:116->114:1
2	someone	someone	PRON	NN	Number=Sing|PronType=Ind	1	obj	1:obj|3:nsubj:xsubj	Entity=(111-person-new-cf3-1-coref)
3	throw	throw	VERB	VB	VerbForm=Inf	1	xcomp	1:xcomp	_
4	something	something	NOUN	NN	Number=Sing	3	obj	3:obj	Entity=(112-object-acc:com-cf1-1-coref)
5	(	(	PUNCT	-LRB-	_	7	punct	7:punct	Discourse=restatement-partial:117->116:0|SpaceAfter=No
6	the	the	DET	DT	Definite=Def|PronType=Art	7	det	7:det	Entity=(112-object-giv:act-cf1-2-appos
7	snitch	snitch	NOUN	NN	Number=Sing	4	appos	4:appos	Entity=112)|SpaceAfter=No
8	)	)	PUNCT	-RRB-	_	7	punct	7:punct	_
9	on	on	ADP	IN	_	11	case	11:case	Discourse=same-unit_m:118->116:1
10	a	a	DET	DT	Definite=Ind|PronType=Art	11	det	11:det	Entity=(113-object-new-cf4-2-sgl
11	line	line	NOUN	NN	Number=Sing	3	obl	3:obl:on	Entity=113)
12	into	into	ADP	IN	_	14	case	14:case	_
13	the	the	DET	DT	Definite=Def|PronType=Art	14	det	14:det	Entity=(109-place-giv:inact-cf2-2-coref
14	pool	pool	NOUN	NN	Number=Sing	3	obl	3:obl:into	Entity=109)
15	at	at	ADP	IN	_	17	case	17:case	_
16	regular	regular	ADJ	JJ	Degree=Pos	17	amod	17:amod	Entity=(114-time-new-cf5-2-sgl
17	intervals	interval	NOUN	NNS	Number=Plur	14	nmod	14:nmod:at	Entity=114)|SpaceAfter=No
18	.	.	PUNCT	.	_	1	punct	1:punct	_
