Hello.
I live in Joensuu, just close by Eno. There are some clear lakes around, but I'm not aware of that many. I usually go to Kuorinka or Viinijärvi which are the lakes I have permission this year.
Kuorinka is quite a nice lake, since it has very good visibility (especially if the wind is not that bad). It has almost totally sand bottom. Couple hundred meters from the restarea (see
map: ) water is shallow, but then it suddenly drops. This is the place to look for the perches.
Other place where I've been couple of times is Viinijärvi. There is a bridge nearby which you can easily go to water (see
map). The problem with Viinijärvi is, however, that the visibility changes a lot and quickly.
Spearfishing is not that common, especially here in eastern Finland. Thus, it might be good idea to have the permissions. In order to spearfish you shall need the fishing management fee paid and then a permission from the owner of the water area. (more info
here).
For Kuorinka and Viinijärvi the permission is rather easy to get (although I'm not sure whether the person who sells the permission speaks anything but finnish). I can send his phone number with email if you need it.
in some cases it's fairly safe to go without permission as well, especially if you're able to enter the water from pier of a summer cottage etc. where there are no spectators.
I've never been fishing in Eno area, but I suppose there are some clear lakes and ponds as well.
I would like to act as your quide, but I will be leaving to Taiwan soon for three months. However, if you're coming here often, please do not hesitate to contact me.