Right, couldnt find anything on bow fishing, apologies. Obviously not something that comes up that often so there's nothing on my police systems. Did find some other stuff on fishing which I thought may be interesting:
2 - Methods Of Fishing
(1) No person shall fish for or take salmon in any inland water, except by rod and line or by net and coble:
Provided that any right of fishing for salmon in existence at the commencement of this Act may continue to be exercised as if the Act had not been passed.
(1A) No person shall fish for or take salmon in any waters in a salmon fishery district other than inland waters, except by rod and line, net and coble or bag net, fly net or other stake net.
(2) No person shall fish for or take freshwater fish in any inland water except by rod and line:
Provided that-
(a) in any pond or loch where all the proprietors are so agreed a right of fishing may be exercised by net; and
(b) in any inland water a proprietor or occupier may fish for or take freshwater fish, other than trout, by net or trap.
(3) Nothing in this section shall be construed as prohibiting the use of a gaff, tailer or landing-net as auxiliary to the taking of salmon or freshwater fish by rod and line.
(4) if any person contravenes this section he shall be guilty of an offence against this Act. (Section 2, as amended by Salmon Act, 1986).
Notes:
(a) For meanings of "freshwater fish", "inland waters", "rod and line", "salmon" and "trout", see Section 24(1) herein.
(b) Other prohibited methods of fishing are described in Section 15, Salmon Fisheries (Scotland) Act, 1868, which would appear to be partly superseded by the above Section 2.
(c) For provisions relating to illegal possession of salmon, trout, instruments, etc., in connection with offences against the above Section 2, see Section 7 herein and, for forfeiture of such articles, see Section 19.
(d) For definitions of methods of fishing and construction of nets, see The Salmon (Definition of Methods of Net Fishing and Construction of Nets) Regulations, 1992, in this Section of the Book.
(e) In Mitchell v McQuaid (2003) G.W.D 30-846, the accused appealed against conviction for taking salmon by foul hooking contrary to section 2(1)(above). The accused had been found hiding whilst wearing camouflage gear and chest waders near three salmon on the riverbank. He was dressed in the same gear as that of three men earlier observed by police to be "ripping", and who ran away on arrival of the police. When searched the accused was found to have a box of triple hooks on his person. The High Court set aside the sheriff's verdict and substituted an amended verdict of guilty with deletion of the words "and take" but did not alter the £500 fine imposed.
If any person-
(a) uses any explosive substance with intent to take or destroy fish in any waters (including the sea within the fishery limits of the British Islands); or
(b) puts any poison or other noxious substance in or near any such waters with intent to take or destroy fish; or
(c) uses any electrical device with intent to stun or destroy salmon or freshwater fish in any such waters;
he shall be guilty of an offence against this Act. (Section 4, as amended by First Schedule, Fishery Limits Act, 1964).
Notes:
(a) For meanings of "salmon" and "freshwater fish", see Section 24(1) herein.
(b) It should be noted that subsections (a) and (b) above apply to all kind of fish while subsection (c) is confined to salmon and freshwater fish.
(c) For provisions relating to illegal possession of salmon, trout, instruments, etc., in connection with offences against the above Section 4, see Section 7 herein and, for forfeiture of such articles, see Section 19.
(d) For power of search, see Section 11.
Please bear in mind this is Scottish legislation and I'm not sure how it translates into English legislation. I'm confident most of it will be the same.
HTH