While there was excellent play by both sides chances were few, Howell thumping a 12 yard effort against the face of the home bar in the 66th minute in the best of his side's efforts.
Luke Haines curled a 25 yard free kick wide of the Stowmarket goal with 70 minutes passed, Carroll's 40 yard dipping volley on the run not quite moving enough and going over the bar in the 82nd minute.
The final chance for the hosts came after 89 minutes with a diagonal ball in by Joe Bennett, a full stretch Tom Newman being unable to fully trouble goalkeeper Craig Brand with his attempt.
ROVERS : Turner, Carroll, Fox, Miles (Clarke, 68), Holmes, Sartini, Newman, Bradley, Burr (Jebb, 77), Bennett, Haines. Subs not used – Halls, Hardwick, Abbott.
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Steven Esdale
# | Team | Pl | Pts |
17. | Walsham le Willows | 46 | 55 |
18. | FC Clacton | 46 | 51 |
19. | Haverhill Rovers | 46 | 49 |
20. | Haverhill Borough | 46 | 40 |
21. | Hadleigh United | 46 | 34 |
22. | Fakenham Town | 44 | 25 |
23. | Ipswich Wanderers | 45 | 21 |