the boat tower 80 other mount orientations may also be used depending on the requirement of the orientation of the accessory for example the tower mount 10 may be rotated 180 degrees for attachment to the boat tower 80 with the accessory attachment 40 positioned upwardly or at the top of the tower mount 10 referring to fig1 through 7 the tower mount 10 may have clamp bolts 14 for insertion through clamp bores 16 to be threadably engaged with threaded holes 24 in clamp base 20 for attachment to the clamp base 20 clamp bores 16 may have clamp recesses 18 the clamp base 20 may have a generally centrally disposed rotational aperture 26 that may also have a generally circular attachment recess 28 on the clamp side of the clamp base 20 there may be one or more set screw apertures 30 for threadable engagement of a set screw 32 in the clamp base 20 to be positioned with a spring biased ball tip 34 in a groove 44 in accessory attachment 40 the accessory attachment 40 may have a rotational side 46 and an attachment side 48 that may be generally opposed sides of the accessory attachment 40 the rotational side 46 may have groove 44 formed therein that may be generally circular in form there may be detents 50 spaced apart in the base 52 of the groove 44 the detents 50 may be disposed radial approximately 45 degrees apart when the accessory attachment may be rotationally attached to the clamp base 20 the spring ball tip 34 of the set screw 32 may serve to retain the clamp base.