Re: TX17 Basstracker trailer length
yes its not uncommon to use a 16ft trailer for 17ft boats, they call them extra long or extra wide or a combination of both but for the wide, they use longer cross members to widen it but the trailer otherwise is the same and for the long they go from an 8ft to a 10ft tongue length to accommodate longer boats so your trailer might be shown as a 16 ft trailer but you need to see if the model number ends with "x" standing for extra wide and "L" standing for long or maybe both.
I have a 17ft flatboat with a magic tilt 1250-1500lb class trailer and the model number is MT16XWL, the MT16W is for 14-16ft boats and is 61" total width while the MT16XWL is for 16-17ft boats and is 75" total width.
if you have a tilt trailer then measure your tongue length from hitch to the other end, its a relatively simple thing to swap out to a longer 10ft tongue if yours is 8ft or less (you never want to go longer then a 10ft tongue or it can be unsafe).
if your tongue is welded to the trailer you can still make it longer by welding on an extension but its not a home project, if done it should be reinforced at the joint and welded by a professional welder.
are you sure it isn't just wrongly positioned too far forward on the trailer? lets see what you are talking about, show us some pictures