David,
Are you sure it is the INDEXSEEK/SEEK that is making things slower? It may be the GO BOTT. GO BOTTOM/GO TOP are very slow (relatively) when filters are in place. Take those out and see what the results are.

FYI, others have posted here they now use INDEXSEEK instead of SEEK even if they want to have the record pointer moved. It has proved to be faster.

>Initially I thought INDEXSEEK() would be a great command, saving some network load etc by not moving the record pointer, until I realised that it respects SET DELETED and SET FILTER. In which case it HAS to move the record pointer and then move it back. That makes it slower than SEEK()
>Since we run with SET DELETED ON in nearly all cases that's sad!
>
>Here's some code that you could modify to test your own files....

>local i, t
>* Assume RMast is open
>set filter to
>
>* NOTE: Rnum=2 is a deleted record and Active=.F.!
>
>t= seconds()
>set deleted on
>for i = 1 to 100000
>	 =seek(2, 'Rmast', 'RNum')
>	 go bott
>endfor
>? 'Old SEEK took ' + str(seconds()-t, 12,2)
>* Ave: 1.00
>
>t= seconds()
>set deleted on
>for i = 1 to 100000
>	 indexseek(2, .F., 'Rmast', 'RNum')
>	 go bott
>endfor
>? 'Indexseek DELETED ON took ' + str(seconds()-t, 12,2)
>* Ave: 1.06
>
>t= seconds()
>set deleted off
>for i = 1 to 100000
>	 indexseek(2, .F., 'Rmast', 'RNum')
>	 go bott
>endfor
>? 'Indexseek DELETED OFF took ' + str(seconds()-t, 12,2)
>* Ave 0.63
>
>set filter to Active
>t= seconds()
>set deleted off
>for i = 1 to 100000
>	 indexseek(2, .F., 'Rmast', 'RNum')
>	 go bott
>endfor
>? 'Indexseek DELETED OFF, FILTER ON took ' + str(seconds()-t, 12,2)
>* Ave 1.38
>