hello there i have been heron'd 3 to 4 times now so i have resorted to putting a net over the top but i'm not liking the look of this soooo my friend has a pond all dug out and then fibreglassed with all straight sides but that was very expencive so has anyone got any ideas you see i dont mind doing the work myself ...i.e. taking out the old pond lining digging out the sides (staright) and then i was thinking of cementing the sides and bottom ......has anyone got any advice at all if this is a good idea or not??? thank you