What is the best way to create fieldcatalog or to use a structure in ALV?

Hello Gurus, i have created a transparent table that contains 40 fields. I need to edit the data in this table using an ALV. Not all the fields suppose to be editable or even be shown. I find it very time consuming to write the fieldcatalog options for all 40 fields, including search help, data type and so on.

What do you think the best solution is ?? Should i create a structure containing the fields i want with search help and everything. Does anyone have a very good tutorial or something.

I tried to design a class to do the work for me, but again its time consuming and i don`t have the time write now.

How do you guys do it when you have many fields that you have to use in the ALV.

Thanks in advance for any advice.