Strawberries - what am I doing wrong?

[gwynleg]

This is now my third year of growing strawberries. I have several different varieties in two raised beds 4' by 8' but only ever get a small handful at a time (i.e once a week). Today there were 4. This seems measly to me when i see pictures on this site from others.

One bed they are grown through membrane and the other just soil. I am sure its not slugs or birds (protected them) so am I not looking after the plants enough?

[calendula]

maybe do a soil test - too shady, too dry, plants bought from same place and not good quality to begin with - what do the leaves look like, do other things nearby grow well - strawberries are on the 'easy to grow' list in my opinion so from all of the above I am thinking the plants are too old to produce much and I would be asking where you bought them - fresh runners from quality plants will produce for several years

[antipodes]

yes that is a little measly. After 3 years you should replace the plants though...
I fertilise with strawberry fertiliser when they are in flower and water frequently. You should get more than that. If slugs are eating them you will see half eaten fruit and the little leaf stem willl still be there. Do you see that?